Tokina AF 11-16mm f/2.8 AT-X Pro DX (Canon) - Review / Lens Test Report - Sample Images & Verdict. Tamron AF 17-50mm f/2.8 SP XR Di II LD Aspherical [IF] (Canon) Canon EF 16-35mm f/2.8 USM L - Review / Lab Test Report. Distortion The lens shows some very strong barrel distortion at 16mm easing towards the long end (35mm) where the lens is basically free of distortion. 16mm: 24mm: 35mm: As usual you should probably expect more distortions towards closer focus distances. Vignetting The EF 16-35mm f/2.8 USM L is a full frame lens so it can take advantage of a sweet spot effect on APS-C DSLRs and vignetting is indeed on a very low level here.
MTF (resolution) The lens exhibited a very good but slightly varying performance in the lab. Two samples of the lens were tested during the recent months. Below is a simplified summary of the formal findings. Chromatic Aberrations Similar to the resolution figures the chromatic aberrations (color shadows at harsh contrast transitions) are in line with what we've seen from other classic ultra-wide zooms. Verdict. Canon EF-S 10-22mm f/3.5-4.5 USM. Tokina AF 12-24mm f/4 AT-X Pro DX (Nikon) Sigma AF 12-24mm f/4.5-5.6 EX DG HSM - Review / Lab Test Report. Distortion The Sigma shows a quite unique distortion characteristic for an ultra-wide angle lens - it is extremely well corrected here with only minimal distortion even at 12mm. The lens is basically free of distortion at 24mm. The remaining distortion is slightly wavy in style though. The chart above has a real-world size of about 120x80cm.
Vignetting The Sigma is a full format lens thus enjoying a sweet spot advantage on APS-C DSLRs. MTF (resolution) The Sigma AF 12-24mm EX produced very good resolution figures throughout the tested aperture and focal length range. Below is a simplified summary of the formal findings. Chromatic Aberrations (CAs) The Sigma has not many weaknesses but it has definitely one - lateral CAs (color shadows at harsh contrast transitions).
Sigma AF 10-20mm f/4-5.6 EX DC HSM - Review / Lab Test Report. Distortion The Sigma AF 10-20mm DC showed a rather unusual distortion characteristic. At 10mm most of the image field is almost free of distortion so the measured distortion figures look fairly fine here (taken a little inward from the extreme borders). However, this is only part of the truth. Nikkor AF-S DX 10-24mm f/3.5-4.5G ED. Review by Markus Stamm, published July 2009 Introduction Since 2003 Nikon has been offering a DX wide angle zoom lens, the Nikkor AF-S DX 12-24/4 G, which is highly regarded, but unfortunately not the most affordable wide angle option.
Six years later now Nikon surprised us with another wide angle zoom, the Nikkor AF-S DX 10-24/3.5-4.5, slightly extended in range at the wide end, but no longer a constant aperture zoom. The new lens is cheaper than the DX 12-24 (which at the time of this writing is still in production), however at around 750 EUR it's far from being cheap. The lens body is made of high quality plastic, which is in line with other higher grade (but not top notch) Nikkor consumer lenses. The lens features a silent wave drive (AF-S) and thus is compatible with all current Nikon DSLRs including the entry level offerings which no longer feature an internal AF drive within the body. Sony 18-55mm f/3.5-5.6 SAM DT - Review / Lab Test. Review by Klaus Schroiff, published December 2010 Introduction The Sony 18-55mm f/3.5-5.6 is the standard kit zoom lens sold with Sony Alpha cameras. It covers the range from classic wide-angles to a moderate tele settings with an equivalent field-of-view of a 27-83mm full format lens.
It replaces the old Sony 18-70mm f/3.5-5.6 DT which was a rather mediocre lens at best.