Originally Posted by
Keith B
My 2¢
I wouldn't buy a lens at this focal length with out IS. So I would definitely take the 4.0 IS over the 2.8.
I had the 4.0 non-IS and had a tough time finding uses for it. I have the IS 2.8 now and couldn't be happier. It is a beast though.
If I were a wealthy man, I'd own both the IS versions.
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I always want to answer these comparison questions with the word BOTH, but it just seems too easy. It's really is the truth though isn't it? Do you want the EF300 f/2.8 or the EF400 f/2.8, answer BOTH. Do you want the 1DMKIII or the 1DsMKIII, answer BOTH. It's just sohard to choose.