Gregory Au wrote on 24/09/2003 13:38:03:
> Hi all,
> I have found it interesting that the this combination produces images
> which are much sharper than with other EF lenses. I barely need to use
> USM (or it adds very little). With my other lenses on this body (incl
> 28-135IS, 100-400L and sigma 70-200EX) I find I need to apply more USM
> to get the usual "zing" in photos I need.
>
> Are other people noticing this?
Not with the 17-40L lens (since I don't own one) but I find the
degree of sharpening necessary does vary with the lens. My
20-35/2.8L needs less sharpening than the 28-135/3.5 but more
than either the 50/1.4 or 100/2 to produce images to my
satisfaction.
It sounds like you've got an excellent copy of the 17-40L, though.
The aperture used (and other variables, such as tripod use)
has an effect but the difference between the lenses is noticeable
at 100% zoom. However it's not noticeable in prints at any of
the sizes I've done so far!
Stuart
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