lokatz
Veteran Member
Whenever you ask the sharpness question about the 100-400, you are guaranteed to get "this one or that one is better" responses. I suggest to ignore ALL of them. OM System made no changes whatsoever to the optical design of version II, which has been discussed at length here when the new lens came out. However, both of them suffer from copy-to-copy variance, which they share with almost every other consumer-level tele lens in the market. Whether you buy version i or ii, make sure to thoroughly test it and return that copy if you are not happy with its sharpness.
Also, forget IS when talking about birds. You will rarely use shutter speeds of 1/100s (= 3 stops of IS), and getting a bird shot at 1/25s (=5 stops of IS) is all but impossible. Nobody needs 7 stops or more for bird photography, but companies still pretend it is a differentiator.
Also, forget IS when talking about birds. You will rarely use shutter speeds of 1/100s (= 3 stops of IS), and getting a bird shot at 1/25s (=5 stops of IS) is all but impossible. Nobody needs 7 stops or more for bird photography, but companies still pretend it is a differentiator.
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