« on: May 28, 2013, 06:09:18 AM »
Enough that I AFMA'd the lens a second time. Still not sharp.
The 7D has a very demanding sensor and with the 70-200 F4 I always felt cheated...the image just wasn't as sharp as I got from my 70-200 2.8 at F2.8. Mind you, the same applies to the 24-105 which also needs to be used at F5.6 to do justice to the 7D sensor.
So far the only lenses I feel are up to what the 7D can produce wide open are the new 24-70II, the 70-200II, the 70-300L, the trusty old 50 F1.4 and of course the new big whites. Even the 100-400 which works very well on the 5DII and 5DIII doesn't quite cut it - close, but it could be better. I am sure there might be other lenses, but these are what I have used in the field.