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Consensus on 24-70/2.8 II field curvature at infinity focus?

Started Sep 14, 2013 | Discussions thread
OP Benedict Slotte Senior Member • Posts: 1,165
Re: Consensus on 24-70/2.8 II field curvature at infinity focus?

I think you should try your lens on another body.

Confirmed. I just tried the 24-70/2.8 II on my other body (1Ds mk3) and see precisely the same behaviour. Sigh. It behaved well in the shop (I specifically tested it for this known artifact), and only later did it become apparent that it just isn't as sharp all over when focusing at infinity. Lesson learned: don't test a lens in the shop, even if you can focus on something "reasonably" far away (e.g. 10-20 m). Instead, shoot something that is truly close to infinite focusing distance. Otherwise the lens will just look better than it really is.

Of course, for all those who shoot mostly at closer distances, this lens is still great.

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B. Slotte
Turku, Finland
http://bslotte.smugmug.com

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