| Announced | 2007-04-01 |
| Indicative price (USD) | 1399 |
| Aperture | f/2.8 |
| Focal range (mm) | 16 - 35 |
| Filter diameter (mm) | 82 |
| Max diameter (mm) | 88.5 |
| Mount type | Canon EF |
| Stabilization | No |
| AF Motor | USM |
| Zoom type | Ring |
| Rotating front element | No |
| Tripod mount | No |
| Color | Black |
| Full-Time manual focus | Yes |
| Number of lenses | 16 |
| Number of groups | 12 |
| Diaphragm blades | 7 |
| Circular aperture | Yes |
| Length (mm) | 111.6 |
| Weight (gr) | 640 |





To provide photographers with a broader perspective about mobiles, lenses and cameras, here are links to articles, reviews, and analyses of photographic equipment produced by DxOMark, renown websites, magazines or blogs.
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The second in our series of selecting the best-quality lenses for your camera concentrates on one of the most highly-anticipated cameras of our time, the successor to the hugely popular EOS 5D Mark II. But by the time it was announced, in early March, it’s probably fair to say Nikon had taken fair amount of interest away by announcing the 36M-Pix D800 and D800E models the month before. Be that as it may, there’s no denying the 22.3 M-Pix EOS 5D Mark III is a remarkably capable camera, and a formidable rival to the Nikon. |
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After looking at the Nikon AF-D series, DxOMark continues working its way through the history of photography by presenting the measurements for another “antique” lens, the Canon EF 20-35mm f/3.5-4.5 USM. |
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DxOMark continues its exploration of the past with this very good wide-angle lens that Sigma first produced for Canon mounts in 2003, and while we’re at it, we’ll use this opportunity to compare it with one of the most best-known lenses on the market, the Canon EF 16-35mm f/2.8L II USM. |
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Very wide-angle lenses allow photographers to produce an image composed of a large number of objects and to frame very large subjects (such as buildings) at close proximity, and to photograph objects on different geometrical planes that can be very far apart. Such lenses also accentuate perspective, with the most noticeable result being the distortion of straight lines. |
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Added by Kova |
April 18, 2012
Maximum Geometric Distortion
Zooms usually have negative distortion (barrel) for short focal lengths, and positive (pincushion) distortion for longer focal lengths.
And here is graph that shows different, but this lens has barrel at 16mm and pincushion at 28-35mm range. Maybe I got something wrong, thanks. Reply |