Conclusion: The Canon 70-200mm F2.8 L IS USM is quite simply an excellent lens, which will reward users with quality images in almost every situation. On full-frame 35mm, sharpness is very good even wide open, becoming excellent corner-to-corner when stopped down. In addition, chromatic aberration is remarkably low, distortion well under control, and vignetting no worse than we'd expect in this class.
Pros: Superb build quality, Highly effective image stabilization, Excellent autofocus and manual override, Consistently high image quality across almost all of the range
Cons: Slightly soft wide open (most notably on APS-C), Average close-up performance, Somewhat susceptible to flare with direct light sources in or close to the frame
Canon EF 70-200mm f/2.8 USM L IS II - APS-C Review / Lab Test Report
29 March 2008
Conclusion: Some of you may have already followed our full format review of the Canon EF 70-200mm f/2.8 USM L IS II. The lens performed highly impressive here already but it's even better on APS-C DSLRs due to the sweet spot effect ("center" crop) here. The resolution is nothing short of phenomenal for a zoom lens and that's throughout the focal length range as well as across the image field. Lateral CAs are not an issue to worry about either.
Canon EF 70-200mm f/2.8 USM L IS II - Full Format Review / Test Report
15 March 2008
Conclusion: It was about time. The old Canon EF 70-200mm f/2.8 USM L IS (mk I) was a good lens but hardly something to rave about especially when used at 200mm. Canon claims to have the leadership in the tele lens arena and they probably do but so far with the exception of this lens segment. Well, this was then and the EF 70-200mm f/2.8 USM L IS II is now and it corrects this last remaining flaw in the Canon tele lens segment.