On Sat, 23 Jun 2001 11:04:20 +0100, you wrote:
>> The Tamron 20-40 *is* an extremely sharp lens.
>> FWIW, photodo rates it a 3.7, higher than any of the Canon zooms
>> (17-35L = 3.2; 20-35L = 3.5) in the same range. Okay those are just
>> numbers, but if you look at slides from the lens, they are razor sharp.
>
>If only Tamron would bring out their version of USM :-)
>Seriously, how fast is the focusing with what, I presume, is an AFD type
>motor.
Actually, Keith, it's pretty fast, and for most wide angle work, not
an issue at all. I'd say that it traverses its entire focusing range
in about the time it takes to say "twenty-forty." True it doesn't have
that "instantaneous" feel that USM has, and it is noisier. The noise
doesn't really bother me, but it might some. One of the reviews
criticised the lens for having a focusing ring feel that was too
loose, and I tend to agree, they could have damped it more in MF mode.
Ken Durling
Website http://home.earthlink.net/~kdurling/
Alternate e-mail: [EMAIL PROTECTED]
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