Hey Everyone,


I also have the 70-200 2.8 II as well as the 1.4x II and 2x II Converters used in combination with the 7D and I feel that the 1.4x II is far better than the 2x II converter, and certainly the gap becomes even more noticeable as the Sun goes down, in favor of the 1.4x II.


My experiences with these combinations, echo what neuroanatomist as observed, I have personally noticed less contrast, slower auto-focus, as well as increased noise with the 2x II. In my experience, the1.4x yields consistently better results, than the 2x, and even the 1.4x degrades overall quality a bit, but certainly acceptable, but just to a lesser degree than the 2x II. I think you may have a problem with your 1.4x converter.


Is it possible that you were comparing the first edition 1.4x converter with the newer 2x II, otherwise you should try to borrow a different 1.4x II.


Rich