markkubis wrote:My experience with my 70-200 f2.8 SSM on my film 7 is that it focuses significantly more slowly and hunts more than my 70-210 f3.5-4.5. It is a useless lens if you need to focus in a hurry. It's not just Minolta lenses. I have tried C*n*n USMs on their bodies and they focus noticeably more slowly than equivalent screw-driven lenses on my film 7 body. Yes, SSM/USM focusing is more quiet but my priority is getting the picture. Anybody else disappointed with focusing speed/hunting on their SSMs?
David Kilpatrick wrote:I did some more tests (on A100) and the 70-200mm SSM takes about 1/5th of a second to focus between 2m and 20m (approx), set to 70mm, while the CZ 16-80mm set to 70mm takes about 1/15th sec. The SSM lens is three times slower. It also is much slower than my 70-210mm 'beercan'. Very quiet, very smooth, and good at tracking movement - but by no means a fast focusing lens.
David Kilpatrick wrote:As it is faster than the 7D or 5D, that does not really worry me. It is nowhere as good as the faster film models - 8000i, 800si, 9, 7, 600 si.
Why is a mystery, you would have thought an existing module and motor would be an economic proposition for newer bodies.
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