21 of 25 people found the following review helpful
A Decent Lens,
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This review is from: Sigma 10-20mm f3.5 EX DC HSM Lens for Canon Digital SLR Cameras with APS-C Sensors (Electronics)
The lens is of good build quality and it produces very good images. The extra-large 83mm opening seems superfluous because the actual lens glass is much smaller but I guess the extra circumference allows for a decent sized hood (included) without encroaching upon the 10mm wide angle shots and it channels as much light as possible into the lens. I've used the lens on a Canon EOS 7D and have produced some very pleasing Castle and Cathedral interior shots hand-held without flash (the constant 3.5mm a big enough aperture for most, but 2.8mm or bigger would be superb. I also took it to the lake district and from the 10mm wide angle perspective it crams a whole load of landscape into the vista. I also used my EFS 17-55mm and the difference within a landscape shot at wide end (10mm V 17mm) makes a huge difference and offers more creative options. It is also great for smaller spaces like car interiors and can make your living room appear cavernous! I would definitely use this if taking photos for selling property or vehicles. I give the 5 stars for value for money. The image quality is very good build quality feels great and good old Sigma include a quality padded case and lens-hood. Very much worth it at the price given the alternatives.
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Showing 1-2 of 2 posts in this discussion
Initial post: 7 Aug 2013 03:02:43 BDT
An aperture of f/3.5 does not equal 3.5mm, nor does an aperture of f/2.8 equal 2.8mm. The unit of measurement for aperture is an f stop and is calculated by dividing the Diameter of the lens by the Focal Length.
In reply to an earlier post on 17 Oct 2013 12:17:29 BDT
R.D Carver says:
My typo, I'd meant f/3.5 rather than 3.5mm of course, sorry.
The good news is that my typo hasn't affected the image quality or overall performance of the lens which is lucky I suppose.
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