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Sample #6 @ 200mm

This page shows the performance at 200mm using sample #6, the best of 6 samples that I tested and that I now own as my personal copy. It shows the highest and most uniform sharpness throughout the frame, and offers excellent performance wide open at f/2.8. This is about as high a performance as you’re likely to observe with the 70-200/2.8L IS II.

Note that the there was a slight upward tilt to the camera; this means that the top and bottom are just barely out of the plane of focus. At this distance (~80 meters or so), the effect is very small, but it is a useful tool to help detect front or backfocus across multiple aperture series. Thus, the top and bottom results might be even a little better than the crops indicate.

Perseverance pays off —

The 70-200mm f/2.8L IS II gave me fits while testing it in March 2010, due to various optical problems documented in this review. The first four samples showed various issues.

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The entire frame as shot

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