VerdictThe verdict about the Tokina AF 12-24mm f/4 AT-X DX can't be easy because its quality varies across the different characteristics. In terms of resolution the lens is on a very high level. The center performance is excellent throughout the whole range. The borders are (naturally) quite a bit worse especially at f/4 but very decent from f/5.6 onward. Distortions are comparatively low for an ultra-wide lens and vignetting may only be an issue at 12mm @ f/4. On the downside chromatic aberrations are a significant problem at harsh contrast transitions - at least if you perfer straight JPEGs or plain converted RAWs. The problem can be almost completely avoided by using intelligent RAW converters such as Raw Shooter Essentials or by manual correction via Adobe Camera RAW or similar tools. So whether this characteristic is a problem for you is dependent on your workflow. Beyond CAs the lens doesn't really like contra light. Using the supplied hood is a good idea here and if possible light sources in the image field should be avoided. Typical for all Tokina AT-X lenses the build quality is on a very high level putting many lenses from other manufacturers to shame especially when considering the quite affordable price of about 450 EUR/US$.
VerdictThe Tokina AF 11-16mm f/2.8 AT-X Pro DX is currently the best ultra-wide angle zoom lens for Canon EOS APS-C DSLRs. The resolution is impressively high throughout the zoom range (albeit a short one) and across the image field. Vignetting is really only a problem at 11mm @ f/2.8 but otherwise the issue is very well controlled. The level of distortions is comparatively low. Typical for most Tokina lenses it has one weakness: lateral CAs which are very high at all settings. The build quality is on a very high level and its a joy to handle the lens out there. All-in-all a very sound package especially when considering the quite affordable price (around 600EUR/US$).
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狗仔卡
发表于 2008-8-17 12:33:08
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显身卡
发表于 2008-8-18 10:03:54
