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	<title>Photography Reviews, News, Forums and Comments &#187; Sigma Lenses</title>
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	<description>Latest Digital Camera Rumours &#38; Reviews</description>
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		<title>Sigma APO 50-150mm f/2.8 EX DC HSM Lens</title>
		<link>http://photoguru.com.au/sigma-apo-50-150mm-f2-8-ex-dc-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-apo-50-150mm-f2-8-ex-dc-hsm-lens.html#comments</comments>
		<pubDate>Sat, 10 Apr 2010 19:39:28 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma APO 50-150mm f/2.8 EX DC HSM Lens]]></category>
		<category><![CDATA[Sigma APO 50-150mm f/2.8 EX DC HSM Lens Review]]></category>
		<category><![CDATA[Sigma APO 50-150mm lens]]></category>
		<category><![CDATA[Sigma APO 50-150mm lens review]]></category>

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		<description><![CDATA[The Sigma APO 50-150mm f/2.8 EX DC HSM is a perfect large aperture lens. High image quality of the Sigma APO 50-150mm lens is assured throughout the entire zoom [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_50_150mm_f_2_8_EX_DC_HSM.jpg"><img class="aligncenter size-full wp-image-4946" title="Sigma_APO_50_150mm_f_2_8_EX_DC_HSM" src="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_50_150mm_f_2_8_EX_DC_HSM.jpg" alt="" width="215" height="391" /></a></p>
<h2><span style="color: #888888;">The Sigma APO 50-150mm f/2.8 EX DC HSM is a perfect large aperture lens. High image quality of the Sigma APO 50-150mm lens is assured throughout the entire zoom range.</span></h2>
<p>The Sigma APO 50-150mm f/2.8 EX DC HSM lens features HSM (Hyper Sonic Motor) system that ensures quiet and high-speed auto focusing with full time manual focus override. The addition of the Sigma 1.4x EX DG APO or 2x EX DG APO Tele Converters (optional extras) produces a 70-210mm f/4.0 AF tele-zoom lens and a 100-300mm f/5.6 AF ultra-telephoto zoom lens  respectively. The compact, lightweight, large aperture Sigma APO 50-150mm f/2.8 EX DC HSM  telephoto zoom lens is designed exclusively for digital SLR  cameras and incorporates the very latest optical technology.</p>
<blockquote><p>Digital camera world sells the Sigma APO 50-150mm f/2.8 EX DC HSM Lens Super cheap cameras sell the Sigma APO 50-150mm f/2.8 EX DC HSM Lens JR camera house sales the <a href="http://jrcamerahouse.com.au/sigma-apo-50150mm-f28-ex-dc-hsm-lens-p-1518.html">Sigma APO 50-150mm f/2.8 EX DC HSM Lens</a> BK camera house sales the Sigma APO 50-150mm f/2.8 EX DC HSM Lens Gerry Gibbs camerahouse sell the Sigma APO 50-150mm f/2.8 EX DC HSM Lens Mandurah camera house sell the Sigma APO 50-150mm f/2.8 EX DC HSM Lens</p></blockquote>
<p><strong>Ephotozine reviews the Sigma APO 50-150mm f/2.8 EX DC HSM and writes:</strong><br />
<em>&#8220;With a compact size and weight alleviating the need for a tripod collar and the third generation of Sigma’s HSM focussing motor making the AF very quick, the lens is fast in every sense and easy to handle. Smooth operating control rings add to the feel of a nice lens that should find it’s way into a good number of kit bags!&#8221;</em></p>
<blockquote>
<h2>Features:</h2>
<p>• Compact and lightweight<br />
• Incorporation of the very latest optical technology<br />
• High image quality is assured throughout the entire zoom range<br />
• Four SLD glass elements are used for utmost correction of chromatic aberrations<br />
• Equipped with HSM (Hyper Sonic Motor) with full-time manual focus override<br />
• Compatible with Sigma 1.4x EX DG and 2x EX DG APO Tele-Converters</p>
<h2>Specifications:</h2>
<p>• Focal length: 50-150mm<br />
• Minimum aperture: f/22<br />
• Lens construction: 18 elements in 14 groups<br />
• Angle of view: 27.9° &#8211; 9.5°<br />
• Number of diaphragm blades: 9pcs<br />
• Minimum focusing distance: 100cm (39.4&#8243;)<br />
• Maximum magnification: 1:5.3<br />
• Filter size: 67 mm<br />
• Lens hood: Bayonet type<br />
• Dimensions: Diameter 76.3 mm (3.0”) x length 135.1 mm (5.3”)<br />
• Weight: 770g / 27.2oz</p></blockquote>
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		<item>
		<title>Sigma 10-20mm f/4-5.6 DC Canon AF Lens</title>
		<link>http://photoguru.com.au/sigma-10-20mm-f4-5-6-dc-canon-af-lens.html</link>
		<comments>http://photoguru.com.au/sigma-10-20mm-f4-5-6-dc-canon-af-lens.html#comments</comments>
		<pubDate>Sat, 10 Apr 2010 18:40:00 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 10-20mm f/4-5.6 DC Canon AF Lens]]></category>
		<category><![CDATA[Sigma 10-20mm f/4-5.6 DC Canon AF Lens Review]]></category>
		<category><![CDATA[Sigma 10-20mm Lens]]></category>
		<category><![CDATA[Sigma 10-20mm Lens Review]]></category>

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		<description><![CDATA[The Sigma 10-20mm f/4-5.6 DC Canon AF is a super wide-angle zoom lens. [...]]]></description>
			<content:encoded><![CDATA[<h2><span style="color: #888888;">The Sigma 10-20mm f/4-5.6 DC Canon AF is a super wide-angle zoom lens. The Sigma 10-20mm is designed exclusively for Canon digital SLR cameras.</span></h2>
<p><a href="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_10_20mm_f_4_5_6_EX_DC.jpg"><img class="aligncenter size-full wp-image-4937" title="Sigma_10_20mm_f_4_5_6_EX_DC" src="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_10_20mm_f_4_5_6_EX_DC.jpg" alt="" width="231" height="247" /></a>This ultra-wide zoom Sigma 10-20mm lens has a wide angle of view from 102.4 &#8211; 63.8 degrees (when Sigma mount is used). The Sigma 10-20mm f/4-5.6 DC Canon AF is an excellent investment for owners of DSLRs with APS-C format sensors.</p>
<p>SLD glass elements effectively compensate color aberration. Aspherical lenses provide maximum correction for distortion and various aberrations; high image quality is displayed throughout the entire zoom range. The HSM equipped models makes fast AF speeds and quiet shooting a reality, and it is also capable of full-time manual focus. The Sigma 10-20mm f/4-5.6 DC Canon AF has a minimum focusing distance of 9.4&#8243; (24cm) at all focal lengths. It is also equipped with an integral Petal-type hood to block out extraneous light.</p>
<blockquote><p>Digital camera world sells the Sigma 10-20mm f/4-5.6 DC Canon AF Lens Super cheap cameras sell the Sigma 10-20mm f/4-5.6 DC Canon AF Lens JR camera house sales the <a href="http://jrcamerahouse.com.au/sigma-1020mm-f456-dc-canon-af-p-1473.html">Sigma 10-20mm f/4-5.6 DC Canon AF Lens</a> BK camera house sales the Sigma 10-20mm f/4-5.6 DC Canon AF Lens Gerry Gibbs camerahouse sell the Sigma 10-20mm f/4-5.6 DC Canon AF Lens Mandurah camera house sell the <a href="http://mandurahcamerahouse.com.au/sigma-1020mm-f456-ex-dc-hsm-lens-p-1864.html">Sigma 10-20mm f/4-5.6 DC Canon AF Lens</a></p></blockquote>
<p><strong>digitalslrphoto.com reviews the Sigma 10-20mm f/4-5.6 EX DC HSM and writes:</strong><br />
<em>&#8220;Using such a wide angle-of-view presents a whole host of fresh creative possibilities and since buying this lens, I rarely use any other focal range to shoot landscape images.<br />
As you would expect from one of Sigma’s EX range, the lens is solid, well constructed and a joy to handle. It may have a relatively slow maximum aperture of f/4-5.6 – but scenic photographers will normally employ an f/stop of f/8 or smaller anyway.<br />
Considering its ultra-wide focal range, it is remarkably compact and it is designed with a practical filter size. Compared to the Nikkor 12-24mm f/4 and Canon’s 10-22mm f/3.5-4.5, it represents a healthy saving of over £200, yet it isn’t a compromise on quality.<br />
If you use an APS-C-type DSLR (most of us do) and presently in the market for an ultra wide-angle lens, then this may well be the optic that you are looking for.  It comes highly recommended.&#8221;</em></p>
<p><strong>Photodo reviews the Sigma 10-20mm f/4-5.6 EX DC HSM and writes:</strong><br />
<em>&#8220;With the wide field of view that this lens gives the digital SLR owners that require panoramic style angles, this lens is an answer to their prayers. The performance is excellent and the size and weight is little more than a standard zoom. Aimed at an area where there are no contenders stepping down from the 35mm arena and fulfilling a definite need, Sigma should be onto a winner here.&#8221;</em></p>
<p><strong>What Digital Camera reviews the Sigma 10-20mm f/4-5.6 EX DC HSM and writes:</strong><br />
<em>&#8220;Some lack of critical sharpness, particularly in the corners, combined with poor control of chromatic aberration has let down what could be a great optic for the price.&#8221;</em></p>
<p><strong>slrlensreview.com reviews the Sigma 10-20mm f/4-5.6 EX DC HSM and writes:</strong><br />
<em>&#8220;Sigma 10-20mm f/4-5.6 EX DC HSM is a great value for your money. The lens is one of the widest zoom lenses for APS-C dSLRs available on the market. Its build quality matches (and some might even claim exceeds) that of a Canon&#8217;s L lens. Image quality rivals other ultra wide zooms on the market. Distortion that plagues the lens across entire focal length is something to be aware of, but considering that I have yet to see an ultra wide zoom that does not show any distortion, I would not stress too much about it. Given its aggressive price, Sigma 10-20mm f/4-5.6 EX DC HSM should remain at the top of your shopping list. Assuming you&#8217;re OK investing in an APS-C type lens that is.&#8221;</em></p>
<p>The Sigma 10-20mm f/4-5.6 DC Canon AF lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras. Wide angle of view 102.4-63.8 degrees (for Sigma mount) offers the photographer greater freedom of expression. The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range. Three SLD (Special Low Dispersion) glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.</p>
<p>This Sigma 10-20mm f/4-5.6 DC Canon AF lens incorporates an internal focusing system, which eliminates front lens rotation allowing the use of a Petal-type Hood and also minimize fluctuation of aberration caused by focusing system. The HSM equipped models ensure a silent, high-speed AF function as well as full-time manual focusing capability. This Sigma 10-20mm lens has a minimum focusing distance of 9.4&#8243; (24cm) throughout the entire zoom range. The Sigma 10-20mm f/4-5.6 DC Canon AF is awarded TIPA best consumer lens in Europe 2006. with a versatile range of wide-angle focal lengths, a good optical performance and a budget price, the Sigma 10-20mm is an excellent investment for owners of DSLRs with APS-C format sensors. Its sharpness remains constant throughout the zoom range, and its compact size makes it an ideal companion for shooting travel, landscapes or architectural photography.</p>
<blockquote>
<h2>Specifications:</h2>
<p>Lens Construction: 14 Elements in 10 Groups<br />
Angle of View: 102.4 &#8211; 63.8<br />
Number of Diaphragm Blades: 6<br />
Minimum Aperture: F22<br />
Minimum Focusing Distance: 24cm/9.4 in.<br />
Maximum Magnification: 1:6.7<br />
Filter Size: Diameter 77mm<br />
Dimensions: Diameter 83.5mm X Length 81mm, 3.3 in. X 3.2 in.<br />
Weight: 465g/16.4 oz</p></blockquote>
]]></content:encoded>
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		<item>
		<title>Sigma 180mm f/3.5 EX DG HSM Lens</title>
		<link>http://photoguru.com.au/sigma-180mm-f3-5-ex-dg-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-180mm-f3-5-ex-dg-hsm-lens.html#comments</comments>
		<pubDate>Sat, 10 Apr 2010 17:34:12 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 180mm f/3.5 EX DG HSM Lens]]></category>
		<category><![CDATA[Sigma 180mm f/3.5 EX DG HSM Lens Review]]></category>
		<category><![CDATA[Sigma 180mm Lens]]></category>
		<category><![CDATA[Sigma 180mm Lens Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4923</guid>
		<description><![CDATA[The Sigma 180mm F3.5 EX DG features a Focus Limiter Switch, which provides a more efficient and positive AF function. The Sigma 180mm Lens provides life-size reproduction and it is optimized for digital [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_180mm_F3.5_EX_DG_IF_HSM.jpg"><img class="aligncenter size-full wp-image-4927" title="Sigma_APO_180mm_F3.5_EX_DG_IF_HSM" src="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_180mm_F3.5_EX_DG_IF_HSM.jpg" alt="" width="243" height="383" /></a></p>
<h2><span style="color: #888888;">The Sigma 180mm F3.5 EX DG features a Focus Limiter Switch, which provides a more efficient and positive AF function. The Sigma 180mm Lens provides life-size reproduction and it is optimized for digital cameras.</span></h2>
<p>Taking picture of small animals and insects can be difficult, because they often run or fly away, or can be dangerous or become aggressive if you approach them. Therefore it is advantageous to have a greater working distance between the camera and such subjects. Longer focal length lens can provide this greater distance, but most long lens do not focus close enough to provide a large image of small subjects. The tele-macro type lens solves this problem by producing a large, high quality image, up to life-size, while maintaining a long working distance. This can enable you to capture on film the world of photomicrography, without disturbing the subjects. The 180mm F3.5 APO MACRO lens has a very narrow field of view, and can allow very narrow depth-of-field for selective focus and less distracting backgrounds. This lens is most desirable for photographers who are serious about producing high quality images both of macro subjects at life-size reproduction, as well as normal telephotography.</p>
<blockquote><p>Digital camera world sells the Sigma 180mm f/3.5 EX DG HSM Lens Super cheap cameras sell the Sigma 180mm f/3.5 EX DG HSM Lens JR camera house sales the <a href="http://jrcamerahouse.com.au/sigma-180mm-f35-ex-dg-hsm-p-1358.html">Sigma 180mm f/3.5 EX DG HSM Lens</a> BK camera house sales the Sigma 180mm f/3.5 EX DG HSM Lens Gerry Gibbs camerahouse sell the Sigma 180mm f/3.5 EX DG HSM Lens Mandurah camera house sell the Sigma 180mm f/3.5 EX DG HSM Lens</p></blockquote>
<p><strong>Floating Inner Focusing System</strong><br />
The Floating Inner Focus System of the APO MACRO 180mm F3.5 EX HSM provides high quality optical performance and superior handling and stability. This system moves two lens groups within the lens, so the lens’ physical length remains unchanged. This technique also maintains good correction for Spherical Aberration and Astigmatism, and provides extremely high optical performance from infinity to 1:1 Macro.</p>
<p><strong>Ephotozine reviews the Sigma 180mm f/3.5 EX DG HSM and writes:</strong><br />
<em>&#8220;With the price of this lens being half that of the Marque competition and the performance being better in some areas and almost as good in others, we can do little else but to recommend this optic as an excellent buy. If you are in the market for a long Macro lens, you would do well to give this one some serious consideration.&#8221;</em></p>
<p><strong>Photozone reviews the Sigma 180mm f/3.5 EX DG HSM and writes:</strong><br />
<em>&#8220;The Sigma AF 180mm f/3.5 EX HSM APO macro is a very capable macro lens with very high resolution figures, marginal vignetting and non-existing distortions. Unfortunately CAs are a on the high side which is unusual for a tele fix-focal lens &#8211; this is a correctable issue though (via PS ACR, RawShooter, etc.). The build quality is very high and thanks to HSM the AF operates pretty fast and virtually silent. Compared to similar genuine brand lenses the AF 180mm f/3.5 EX APO macro is an absolute bargain at less than half the costs. However, all-in-all the Sigma AF 150mm f/2.8 EX HSM APO macro DG was a little more convincing.&#8221;</em></p>
<p><strong>Photozone reviews the Sigma 180mm f/3.5 EX DG HSM and writes:</strong><br />
<em>&#8220;Sigma APO Macro 180mm f/3.5 EX DG HSM is a very strong contender among telephoto macro lenses. The lens combines very strong image performance on both full frame and APS-C cameras, excellent build quality, low level of distortion and good color handling, all that at very aggressive price. There does not seem to be any glaring weaknesses with the lens and that by itself is a major achievement. So if you are in the market for a telephoto macro, then Sigma&#8217;s 180mm macro lens should most certainly remain at the top of your list.&#8221;</em></p>
<p><strong>Full-time Manual Focus with HSM</strong><br />
Macro photography requires precise focus adjustment. The HSM (Hyper Sonic Motor) feature is ideal for this purpose as it allows quick and precise manual focus, even in auto focus mode. Simply focus with HSM auto focus, then while partially depressing the shutter release, turn the manual focus ring until any desired focus adjustment is made. Then depress the shutter release fully to take the picture. It is not necessary to switch from AF to MF. When the shutter release is next depressed, the AF function will resume. Of course the AF function can be disabled altogether, and only MF used, if desired.<br />
<strong><br />
It is possible to use 1.4x or 2x Sigma Apo Tele Converters</strong><br />
Macro photography can be further enhanced by the 1.4x APO EX tele-converter, which allows the photographer to use the new SIGMA APO 180mm F3.5 MACRO lens as a 252mm F5 lens while maintaining auto focus function from infinity to 1.2m(47.2 in.) with Canon, Nikon and Sigma cameras. At distances closer than 1.2m (47.2 in.) the lens automatically switches to MF mode. When this lens and the 1.4x EX tele-converter are used with Minolta or Pentax cameras the lens must be focused manually. When used with the 2x EX tele-converter, the 180mm F3.5 lens becomes a 360mm F7 lens with manual focus function only, regardless of camera mount.</p>
<p><strong>Use of SLD (Special Low Dispersion) glass</strong><br />
Image quality depends in part on color Aberration, which occurs due to differences in the wavelength (color) of light, causing the different colors to focus at different planes. SLD glass in the front optical group helps compensate for this phenomenon, and enables the lens to deliver images of high optical quality, having outstanding crispness and sharpness.</p>
<p><strong>Inner Focus</strong><br />
Inner focusing improves handling and focus operation from infinity to close-up, by keeping the lens’ length constant. It also allows easy handling and use of circular polarizing filters, as the front barrel does not rotate during focusing. The large grippable manual focus control ring is ideal for manual focus photography. This lens also features a Focus Limiter Switch, to provide quicker AF function.</p>
<blockquote>
<h2>Specifications:</h2>
<p>Focal Length :180mm<br />
Minimum Aperture :F32<br />
Lens Construction :13 Elements in 10 Groups<br />
Angle of View :13.7°<br />
Number of Diaphragm Blades :9pcs<br />
Minimum Focusing Distance :46cm(18.1”)<br />
Maximum Magnification :1:1<br />
Filter Size :72mm<br />
Lens Hood :Bayonet Hood</p>
<p>Dimensions : Diameter 80mm (3.1”) x Length 182mm (7.1”)<br />
Weight :965gr/34oz</p></blockquote>
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		<title>Sigma APO 100-300mm f/4 EX DG HSM Lens</title>
		<link>http://photoguru.com.au/sigma-apo-100-300mm-f4-ex-dg-hsm.html</link>
		<comments>http://photoguru.com.au/sigma-apo-100-300mm-f4-ex-dg-hsm.html#comments</comments>
		<pubDate>Sat, 10 Apr 2010 16:59:55 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma APO 100-300mm f/4 EX DG HSM]]></category>
		<category><![CDATA[Sigma APO 100-300mm f/4 EX DG HSM Review]]></category>
		<category><![CDATA[Sigma APO 100-300mm Lens]]></category>
		<category><![CDATA[Sigma APO 100-300mm Lens Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/sigma-apo-100-300mm-f4-ex-dg-hsm.html</guid>
		<description><![CDATA[The Sigma APO 100-300mm f/4 EX DG HSM is a very good telephoto zoom lens. The Sigma APO 100-300mm has a new multi layer lens coating and lens design to reduce flare and [...]]]></description>
			<content:encoded><![CDATA[<h2><span style="color: #888888;">The Sigma APO 100-300mm f/4 EX DG HSM is a very good telephoto zoom lens. The Sigma APO 100-300mm has a new multi layer lens coating and lens design to reduce flare and ghosting.</span></h2>
<p><a href="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_100_300mm_f_4_EX_DG_HSM.jpg"><img class="aligncenter size-full wp-image-4918" title="Sigma_APO_100_300mm_f_4_EX_DG_HSM" src="http://photoguru.com.au//wp-content/uploads/2010/04/Sigma_APO_100_300mm_f_4_EX_DG_HSM.jpg" alt="" width="180" height="383" /></a>The Sigma APO 100-300mm f/4 EX DG HSM lens provides a large constant F4 maximum aperture at all focal lengths. The use of Apochromatic design and 4 SLD (The Special Low Dispersion) glass elements (two SLD glass elements are utilized in the front lens group and two in the rear group) for full correction of chromatic aberration and providing a high level of optical performance. The AF drive for Sigma SA, Canon and Nikon cameras is equipped with silent, responsive and high speed HSM (Hyper Sonic Motor) as well as fulltime manual focus.</p>
<p><strong>Reduces flare and ghosting</strong><br />
New multi layer coating of this lens gives superb color performance whilst cutting down flare and ghosting caused by reflections from the digital image sensor. High optical performance is demonstrated throughout the entire zoom range.</p>
<p><strong>Employs SLD (Super Low Dispersion) Glass</strong><br />
Two SLD glass elements are used in the front lens group and two in the rear lens group for superior correction of several aberrations for superior image quality throughout the entire zoom range.</p>
<blockquote><p>Digital camera world sells the Sigma APO 100-300mm f/4 EX DG HSM Lens Super cheap cameras sell the Sigma APO 100-300mm f/4 EX DG HSM Lens JR camera house sales the <a href="http://jrcamerahouse.com.au/sigma-apo-100300mm-f4-ex-dg-hsm-p-1506.html">Sigma APO 100-300mm f/4 EX DG HSM Lens</a> BK camera house sales the Sigma APO 100-300mm f/4 EX DG HSM Lens Gerry Gibbs camerahouse sell the Sigma APO 100-300mm f/4 EX DG HSM Lens Mandurah camera house sell the Sigma APO 100-300mm f/4 EX DG HSM Lens</p></blockquote>
<p><strong>Silent high-speed AF with HSM</strong><br />
The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon-D mount lenses.</p>
<p><strong>Ephotozine reviews the Sigma APO 100-300mm f/4 EX DG HSM Lens and writes:</strong><br />
<em>&#8220;As a step up from the run of the mill &gt;300mm zooms this lens is certainly worth considering. The constant aperture and faster, quieter autofocusing make all the difference, ably helped by a constant length and internal focus mechanism to make handling a joy. Four SLD glass elements in the construction help to make a nice improvement to the output quality too.&#8221; </em></p>
<p><strong>slrlensreview.com reviews the Sigma APO 100-300mm f/4 EX DG HSM Lens and writes:</strong><br />
<em>&#8220;All-in-all, Sigma 100-300mm f/4 EX DG HSM is an excellent lens. Combination of constant (moderately fast) aperture, excellent build and image quality and affordable (for a telephoto zoom lens) price allowed Sigma to create a very attractive package that should be quite popular among photographers. As mentioned earlier, for those of you using an APS-C camera, this can become a dedicated sports/wildlife lens (not so much for owners of full-frame bodies, since 300mm range is somewhat limiting and image quality here is lagging). And at 100mm, the lens can be a dedicated portrait lens that will give a run for image quality even to the best telephoto primes.&#8221; </em></p>
<p><strong>Photozone reviews the Sigma APO 100-300mm f/4 EX DG HSM Lens and writes:</strong><br />
<em>&#8220;The Sigma AF 100-300mm f/4 EX HSM DG is one of the most impressive Sigma lenses tested to date. It is able to deliver a near-flawless performance with great resolution figures, low vignetting, low distortions, low CAs and a very decent bokeh (albeit slightly underdeveloped regarding the moderate max. aperture unless your main subject is fairly close). It works reasonably well with the Sigma AF 1.4x DG EX converter but there&#8217;s no free lunch here for obvious reasons. The Sigma is quite a monster of a lens but the combination of speed and focal length range simply takes its toll regarding size and weight requirements. The build quality is exceptionally high and combined with the snappy AF it was a joy to use the lens in the field.&#8221; </em></p>
<p><strong>Inner focusing and inner zooming systems</strong><br />
An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood supplied and circular polarizing filters. Since focusing and zooming do not change its overall length, ease of handling and operation is assured. A rotating tripod mount can be conveniently detached if required.<br />
<strong><br />
APO Tele-Converter EX (optional)</strong><br />
High-speed focusing is possible when this lens is used with dedicated APO EX tele-converters (1.4x and 2x). With the optional APO tele-converter 1.4x EX, it works as AF zoom lens from 140mm to 420mm F5.6. With APO tele-converter 2.0x EX, it works as a manual focus zoom lens from 200mm to 600mm F8.</p>
<blockquote>
<h2>Specification</h2>
<ul>
<li>Focal length 100-300mm</li>
<li>Max aperture f/4</li>
<li>Min aperture f/32</li>
<li>Construction 16/14 elements/groups</li>
<li>Closest focus 1.8m</li>
<li>Reproduction ratio 1:5</li>
<li>Filter size 82mm</li>
<li>Dimensions 92.4x227mm</li>
<li>Weight 1.44kg</li>
</ul>
</blockquote>
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		<title>Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens</title>
		<link>http://photoguru.com.au/sigma-apo-150-500mm-f5-6-3-dg-os-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-apo-150-500mm-f5-6-3-dg-os-hsm-lens.html#comments</comments>
		<pubDate>Mon, 22 Mar 2010 11:42:25 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens]]></category>
		<category><![CDATA[Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens Review]]></category>
		<category><![CDATA[Sigma APO 150-500mm Lens]]></category>
		<category><![CDATA[Sigma APO 150-500mm Lens Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4642</guid>
		<description><![CDATA[Sigma Japan has announced its APO 150-500mm f/5-6.3 DG OS HSM lens will be available soon in Sony and Pentax mounts. [...]]]></description>
			<content:encoded><![CDATA[<h2><span style="color: #888888;">Sigma Japan has announced its APO 150-500mm f/5-6.3 DG OS HSM lens will be available soon in Sony and Pentax mounts. Currently available in Canon, Nikon and Sigma mounts, the Sony version will start shipping from March 27, 2010 followed by the Pentax version from April 23, 2010.</span></h2>
<p><a href="http://photoguru.com.au//wp-content/uploads/2010/03/Sigma_150_500_5_63_dg_os_hsm.jpg"><img class="aligncenter size-full wp-image-4645" title="Sigma_150_500_5_63_dg_os_hsm" src="http://photoguru.com.au//wp-content/uploads/2010/03/Sigma_150_500_5_63_dg_os_hsm.jpg" alt="" width="356" height="181" /></a>This ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows photographers to bring the subject close and short perspective. This lens has an equivalent field of view of a 225-750mm when used on digital SLR cameras with an APS-C size image sensor. Sigma’s original OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement.It is ideal for sports, wildlife and landscape photography with handheld shooting. Three SLD (Special Low Dispersion) glass elements provide excellent correction for chromatic aberration.</p>
<blockquote><p>Digital camera world sells the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens Super cheap cameras sell the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens JR camera house sales the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens BK camera house sales the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens Gerry Gibbs camerahouse sell the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens Mandurah camera house sell the Sigma APO 150-500mm f/5-6.3 DG OS HSM Lens</p></blockquote>
<p>This lens is equipped with a rear focus system that minimizes fluctuation of aberration caused by focusing. The super multi-layer lens coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The addition of the (optional) 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 210-700mm F7-9 MF ultra-telephoto zoom lens or a 300-1000mm F10-13 MF ultra-telephoto zoom lens respectively (For Sony fitting only). A removable tripod socket (TS-31) is included as a standard component.</p>
]]></content:encoded>
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		<item>
		<title>Sigma 17-50mm F2.8 EX DC OS HSM Lens</title>
		<link>http://photoguru.com.au/sigma-17-50mm-f2-8-ex-dc-os-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-17-50mm-f2-8-ex-dc-os-hsm-lens.html#comments</comments>
		<pubDate>Tue, 23 Feb 2010 19:01:20 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 17-50mm F2.8 EX DC OS HSM Lens]]></category>
		<category><![CDATA[Sigma 17-50mm F2.8 EX DC OS HSM Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4435</guid>
		<description><![CDATA[<p>The Sigma 17-50mm f2.8 EX DC OS HSM is a compact large aperture standard zoom lens equipped with optical stabilisation. This large aperture standard zoom lens is designed for digital SLR cameras with APS-C size sensors. Two FLD (“F” Low Dispersion) glass elements, plus two glass mold and one hybrid aspherical lens, provide excellent correction [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_17_50mm_f2.8_EX_DC_OS_HSM.jpg"><img class="aligncenter size-full wp-image-4440" title="Sigma_17_50mm_f2.8_EX_DC_OS_HSM" src="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_17_50mm_f2.8_EX_DC_OS_HSM.jpg" alt="" width="476" height="400" /></a>The Sigma 17-50mm f2.8 EX DC OS HSM is a compact large aperture standard zoom lens equipped with optical stabilisation. This large aperture standard zoom lens is designed for digital SLR cameras with APS-C size sensors. Two FLD (“F” Low Dispersion) glass elements, plus two glass mold and one hybrid aspherical lens, provide excellent correction for all type of aberrations. The inner focusing system eliminates front lens rotation, making the Sigma 17-50mm f2.8 particularly suitable for use with the supplied petal-type lens hood and circular polarising filters.</p>
<blockquote><p>Digital camera world sells the Sigma 17-50mm F2.8 EX DC OS HSM Lens  Super cheap cameras sell the Sigma 17-50mm F2.8 EX DC OS HSM Lens JR camera house sales the Sigma 17-50mm F2.8 EX DC OS HSM Lens  BK camera house sales the Sigma 17-50mm F2.8 EX DC OS HSM Lens  Gerry Gibbs camerahouse sell the Sigma 17-50mm F2.8 EX DC OS HSM Lens Mandurah camera house sell the Sigma 17-50mm F2.8 EX DC OS HSM Lens</p></blockquote>
<h2>Key Features:</h2>
<p>•    OS (Optical Stabilizer)<br />
•    Two FLD (“F” Low Dispersion) glass elements<br />
•    Super Multi-Layer Coating reduces flare and ghost<br />
•    HSM (Hyper Sonic Motor)<br />
•    inner focusing system</p>
<blockquote>
<h2>Specifications:</h2>
<p><strong>Focal length: </strong>17-50mm</p>
<p><strong>Maximum aperture:</strong> f/2.8<br />
<strong><br />
Minimum aperture: </strong>f/22</p>
<p><strong>Lens construction:</strong><br />
• 13 groups 17 elements<br />
• 2 FLD glass elements</p>
<p><strong>Angle of view:</strong> 72.4°-27.9°</p>
<p><strong>Closest focus distance: </strong>28cm / 11in</p>
<p><strong>Maximum reproduction ratio: </strong> 1:5<br />
<strong><br />
Aperture blades:</strong> 7 (rounded)</p>
<p><strong>Filter attachment size:</strong> 77 mm</p>
<p><strong>AF motor:</strong> HSM motor</p>
<p><strong>Dimensions:</strong> 83.5mm x 91.8.8mm (3.3in × 3.6in)</p>
<p><strong>Weight:</strong> TBC</p>
<p><strong>Supplied accessories:</strong><br />
• Case<br />
• Petal-type Hood (LH825-03)</p>
<p><strong>Mounts:</strong> Sigma, Sony, Nikon, Pentax, Canon</p></blockquote>
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		<item>
		<title>Sigma 8-16mm F4.5-5.6 DC HSM Lens</title>
		<link>http://photoguru.com.au/sigma-8-16mm-f4-5-5-6-dc-hsm.html</link>
		<comments>http://photoguru.com.au/sigma-8-16mm-f4-5-5-6-dc-hsm.html#comments</comments>
		<pubDate>Mon, 22 Feb 2010 16:48:17 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 8-16mm F4.5-5.6 DC HSM Lens]]></category>
		<category><![CDATA[Sigma 8-16mm F4.5-5.6 DC HSM Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4394</guid>
		<description><![CDATA[The Sigma 8-16mm F4.5-5.6 DC HSM is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/02/sigma_8_16MM_4.5-5.6_DCHSM.jpg"><img class="aligncenter size-full wp-image-4398" title="sigma_8_16MM_4.5-5.6_DCHSM" src="http://photoguru.com.au//wp-content/uploads/2010/02/sigma_8_16MM_4.5-5.6_DCHSM.jpg" alt="" width="339" height="500" /></a>The Sigma 8-16mm F4.5-5.6 DC HSM is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors. The Sigma 8-16mm F4.5-5.6 DC HSM lens has an equivalent angle of view of a 12-24mm lens when used on digital cameras with an APS-C size image sensor.</p>
<blockquote><p>Digital camera world sells the Sigma 8-16mm F4.5-5.6 DC HSM Lens Super cheap cameras sell the Sigma 8-16mm F4.5-5.6 DC HSM Lens JR camera house sales the Sigma 8-16mm F4.5-5.6 DC HSM Lens BK camera house sales the Sigma 8-16mm F4.5-5.6 DC HSM Lens Gerry Gibbs camerahouse sell the Sigma 8-16mm F4.5-5.6 DC HSM Lens Mandurah camera house sell the Sigma 8-16mm F4.5-5.6 DC HSM Lens</p></blockquote>
<p>The wide-angle of view from 121.2 degrees* produces striking images with exaggerated perspective, enabling photographers to emphasize the subject. Four FLD (“F” Low Dispersion) glass elements, which have the performance equal to fluorite glass, compensate for color aberration. One hybrid aspherical lens and two glass mold elements give excellent correction for distortion and astigmatism. Incorporating an inner focusing system, the lens produces high definition images throughout the entire zoom range. The Super Multi-Layer Coating reduces flare and ghosting while superior peripheral brightness ensures high contrast images throughout the entire zoom range.</p>
<p>The Sigma 8-16mm F4.5-5.6 DC HSM lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. It has a minimum focusing distance of 24cm throughout the entire zoom range which allows photographers to emphasize the subject by creating exaggerated perspectives. This lens has a compact construction with an overall length of 105.7mm and a maximum diameter of 75mm.</p>
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		<title>Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens</title>
		<link>http://photoguru.com.au/sigma-apo-50-500mm-f4-5-6-3-dg-os-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-apo-50-500mm-f4-5-6-3-dg-os-hsm-lens.html#comments</comments>
		<pubDate>Mon, 22 Feb 2010 16:26:30 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens]]></category>
		<category><![CDATA[Sigma APO 50-500mm F4.5-6.3 DG OS HSM Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4387</guid>
		<description><![CDATA[The new Sigma APO 50-500mm F4.5-6.3 DG OS HSM is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma’s original Optical Stabilizer [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_APO_50_500mm_F4_5_6_3_DG_HSM_Lens.jpg"><img class="aligncenter size-full wp-image-4391" title="Sigma_APO_50_500mm_F4_5_6_3_DG_HSM_Lens" src="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_APO_50_500mm_F4_5_6_3_DG_HSM_Lens.jpg" alt="" width="720" height="480" /></a>The new Sigma APO 50-500mm F4.5-6.3 DG OS HSM is a 10x high zoom ratio ultra telephoto zoom lens incorporating Sigma’s original Optical Stabilizer function. The Sigma APO 50-500mm F4.5-6.3 DG OS HSM lens covers a wide range of focal lengths from 50mm to 500mm ultra telephoto.</p>
<p>The OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an image sensor shift anti-shake system. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement. Four SLD (Special Low Dispersion) glass elements provide excellent correction of color aberration. The Super Multi-Layer Coating reduces flare and ghost and ensures high image quality throughout the entire zoom range.</p>
<blockquote><p>Digital camera world sells the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens Super cheap cameras sell the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens JR camera house sales the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens BK camera house sales the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens Gerry Gibbs camerahouse sell the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens Mandurah camera house sell the Sigma APO 50-500mm F4.5-6.3 DG OS HSM Lens</p></blockquote>
<p>The Sigma APO 50-500mm F4.5-6.3 DG OS HSM lens has a maximum magnification ratio of 1:3.1 (at the focal length of 200mm) making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), ensuring quiet and high speed AF as well as full-time manual focus capability. The addition of the optional 1.4x EX DG or 2x EX DG APO Tele Converters produce a 70-700mm F6.3-8 or a 100-1000mm F9-12.6 MF zoom lens respectively. This lens is equipped with a Petal-type hood to block out extraneous light. The filter size of this lens is φ95mm and the lens is supplied with a step down ring enabling digital cameras with an APS-C size image sensor to use an φ86mm filter.</p>
<blockquote>
<h2>Specifications:</h2>
<p><strong><br />
Focal length:</strong><br />
• 50-500mm<br />
<strong><br />
Maximum aperture:</strong><br />
• f/4.5-6.3</p>
<p><strong>Minimum aperture:</strong><br />
• f/22</p>
<p><strong>Lens construction:</strong><br />
• 16 groups 22 elements<br />
• 4 SLD glass elements</p>
<p><strong>Angle of view (APS-C crop):</strong><br />
• 46.8°-5.0°</p>
<p><strong>Closest focus distance:</strong><br />
• 50-180cm (9.7-70.9in)<br />
<strong><br />
Maximum reproduction ratio:</strong><br />
• 1:3.1 (f=200mm)</p>
<p><strong>Aperture blades:</strong><br />
• 9 (rounded)<br />
<strong><br />
Filter attachment size:</strong><br />
• 95 mm</p>
<p><strong>AF motor:</strong><br />
• HSM motor</p>
<p><strong>Dimensions:</strong><br />
• 104.4mm x 219mm (4.1 in x 8.6 in)</p>
<p><strong>Weight:</strong><br />
• 1970g (69.5oz)</p>
<p><strong>Supplied accessories:</strong><br />
• Case<br />
• Petal-type Hood (LH1030-01)<br />
• Step down ring<br />
• Shoulder Strap<br />
• Tripod socket TS-31<br />
<strong><br />
Optional accessories:</strong><br />
• Sigma DG UV 95mm<br />
• Sigma DG Circular Polarizer 95mm<br />
• APO Teleconverter 1.4x EX DG<br />
• APO Teleconverter 2x EX DG</p>
<p><strong>Mounts:</strong><br />
• Sigma, Sony, Nikon, Pentax, Canon</p></blockquote>
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		<title>Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens</title>
		<link>http://photoguru.com.au/sigma-17-70mm-f2-8-4-dc-macro-os-hsm-lens.html</link>
		<comments>http://photoguru.com.au/sigma-17-70mm-f2-8-4-dc-macro-os-hsm-lens.html#comments</comments>
		<pubDate>Tue, 16 Feb 2010 12:45:07 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 17-70mm F2.8-4 DC Macro OS HSM]]></category>
		<category><![CDATA[Sigma 17-70mm F2.8-4 DC Macro OS HSM Review]]></category>

		<guid isPermaLink="false">http://photoguru.com.au/?p=4343</guid>
		<description><![CDATA[Sigma Corporation, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, is pleased to announce its newly upgraded 17-70mm F2.8-4 DC Macro OS HSM [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_17_70mm_F2_8_DC_Macro_OS_HSM.jpg"><img class="aligncenter size-full wp-image-4347" title="Sigma_17_70mm_F2_8_DC_Macro_OS_HSM" src="http://photoguru.com.au//wp-content/uploads/2010/02/Sigma_17_70mm_F2_8_DC_Macro_OS_HSM.jpg" alt="" width="250" height="323" /></a>Sigma Corporation, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, is pleased to announce its newly upgraded 17-70mm F2.8-4 DC Macro OS HSM lens.</p>
<p>This large aperture, standard zoom lens contains state-of-the-art enhancements, including the company’s own Optical Stabilization (OS), anti-shake technology that offers the use of shutter speeds approximately four stops slower than would otherwise be possible. Once again, only Sigma has made it possible for Pentax and Sony shooters to utilize an anti-shake system in either the lens or the camera body.</p>
<blockquote><p>Digital camera world sells the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens Super cheap cameras sell the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens JR camera house sales the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens BK camera house sales the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens Gerry Gibbs camerahouse sell the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens Mandurah camera house sell the Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens</p></blockquote>
<p>This lens’ predecessor, the 17-70mm F2.8-4.5 DC Macro HSM, was deemed a “Best Buy” recommendation for photographers wishing to purchase a standard zoom lens as part of the Canadian Association for Photographic Art’s (CAPA) “Best Lens of the Year” awards.</p>
<p>“Aside from the OS technology, which is key when shooting with mid-range and high-end class DSLRs, this lens stands apart from the crowd because of its impressive zoom range,” said Mark Amir-Hamzeh, general manager of Sigma Corporation of America. “It has a 4x zoom range that is equivalent to 24-105mm lenses in full-frame formats. That, coupled with the OS technology and a macro function, makes it the ultimate standard lens for serious photographers who want top-notch image quality and functionality at an affordable price.”</p>
<p>With a large aperture of F2.8 on the wide end and F4 at the tele end, as well as a macro function with a minimum focusing distance of 8.7 inches and a maximum magnification ratio of 1:2.7, this lens is ideal for a wide range of photography. The lens’ Hyper Sonic Motor (HSM) also ensures a quiet and high speed auto focus, while its rounded, seven-blade diaphragm creates an attractive blur to the out-of-focus areas to provide the optimal Bokeh effect. The inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the supplied petal-type lens hood and circular polarizing filters.</p>
<p>Three aspherical lenses and one Extraordinary Low Dispersion (ELD) glass element provide excellent correction for all types of aberrations when shooting with this lens. Additionally, the Super Multi-Layer Coating reduces flare and ghosting to produce high-contrast images.</p>
<blockquote>
<h2>Specifications:</h2>
<p><strong>Lens Construction: </strong>17 Elements in 13 Groups</p>
<p><strong>Angle of View:</strong> 72.4 &#8211; 20.2 degrees</p>
<p><strong>Number of Diaphragm Blades:</strong> 7 Blades (rounded diaphragm)</p>
<p><strong>Minimum Aperture:</strong> F22<br />
<strong><br />
Minimum Focusing Distance:</strong> 22cm / 8.7 in.</p>
<p><strong>Maximum Magnification: </strong> 1:2.7</p>
<p><strong>Filter Size:</strong> Diameter 72mm</p>
<p><strong>Dimensions:</strong> Diameter 79mm X Length 88.9mm<br />
3.1 in. X 3.5 in.</p>
<p><strong>Weight: </strong>535g/18.9 oz.<br />
<strong><br />
Corresponding AF Mounts:</strong> SIGMA, CANON, NIKON (D), SONY/MINOLTA (D),PENTAX</p></blockquote>
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		<title>Sigma 70-300mm F4-5.6 APO DG Macro Lens Review</title>
		<link>http://photoguru.com.au/sigma-70-300mm-f4-5-6-apo-dg-macro-lens.html</link>
		<comments>http://photoguru.com.au/sigma-70-300mm-f4-5-6-apo-dg-macro-lens.html#comments</comments>
		<pubDate>Mon, 07 Sep 2009 11:01:49 +0000</pubDate>
		<dc:creator>Evgenia</dc:creator>
				<category><![CDATA[Sigma Lenses]]></category>
		<category><![CDATA[Sigma 70-300mm F4-5.6 APO DG Macro Lens]]></category>
		<category><![CDATA[Sigma 70-300mm F4-5.6 APO DG Macro Lens Reviews]]></category>

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		<description><![CDATA[Sigma APO 70-300mm f4-5.6 DG Macro Lens with built-in motor allows autofocus with all digital [...]]]></description>
			<content:encoded><![CDATA[<p><strong><img class="aligncenter size-full wp-image-2659" title="SIGMA_70_300MM_APO_DG_MACRO_LENS" src="http://photoguru.com.au//wp-content/uploads/2009/09/SIGMA_70_300MM_APO_DG_MACRO_LENS.jpg" alt="SIGMA_70_300MM_APO_DG_MACRO_LENS" width="160" height="270" /></strong></p>
<p>Sigma APO 70-300mm f4-5.6 DG Macro Lens with built-in motor allows autofocus with all digital cameras. These lenses incorporate a macro feature with maximum magnification 1:2 at the 300mm focal length. It is suitable for various types of shooting conditions.</p>
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<p><strong>Telephoto zoom lenses with tele-macro function, optimized for digital cameras.</strong></p>
<p>The high performance telephoto zoom lens is ideal for digital SLR cameras. This lens has two SLD glass elements in the front lens group and one in the rear lens group It is able to shoot with maximum magnification 1:2 at the focal length of 300 mm. It’s the ideal lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range.</p>
<p><strong>New coating reduces Ghost and Flare.</strong></p>
<p>The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.</p>
<p><strong>It is equipped with three pieces of SLD glass for high image quality</strong></p>
<p>This lens has two SLD (Special Low Dispersion) glass elements in the front lens group and one in the rear lens group, the lens has excellent correction of chromatic aberration through the entire zoom range.</p>
<blockquote>
<h2><strong>Key Features:</strong></h2>
<p>New coating reduces Ghost and Flare.<br />
SLD Glass<br />
Switch (convert to macro)<br />
Macro Shooting</p></blockquote>
<p><strong>Macro shooting with maximum magnification 1:2</strong></p>
<p>High optical performance is demonstrated throughout the entire zoom range. It also has a switch that converts the lens to macro photography at focal lengths between 200mm and 300mm with a minimum focusing distance of 95cm (37.4 inches). In normal mode the minimum focusing distance is 150cm (59.1 inches) at all zoom settings. Maximum magnification between 200mm and 300mm is 1:2.9 to 1:2.</p>
<h2><strong>Specifications:</strong></h2>
<p>- Lens Construction: 14 Elements in 10 Groups<br />
- Angle of View: 34.3 &#8211; 8.2 degrees<br />
- Number of Diaphragm Blades: 9 Blades<br />
- Minimum Aperture: F22<br />
- Minimum Focusing Distance: 150 cm / (95cm Macro mode)<br />
- Maximum Magnification: 1:4.1 / 1:2 (Macro mode)<br />
- Filter Size: Diameter 58 mm<br />
- Dimensions: Diameter 76.6 x 122 mm<br />
- Weight: 550 g</p>
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