Plumviewer wrote:
>
> [EMAIL PROTECTED] wrote:
> > Are you aware that the EOS-3 will have less than optimal
> > autofocus performance for the EF 28-135mm f/3.5-5.6 IS
> > USM zoom lens? There was a recent thread in the archives
> > about this issue.
> >
> > Cheers
> > Julian Loke
> >
> I feel compelled to ask if you found that thread compelling. I found
> it, the thread, somewhat confused rather than conclusive evidence that
> the EOS 3 and 1v under perform with lenses beneath f/4 in aperture.
>
> Regards,
>
> Plumviewer
I agree with plumviewer here. While the loss of one sensor direction
with slower lenses is certainly causing the AF to be "less than
optimal", it does not mean that the AF will be real bad. I use the
same lens on my 1N, which shuts off one direction of the central
sensor with lenses slower than f/2.8. While it's quite easy to prove
this by trying to AF on a scene with horizontal detail only (like a
door frame), I have never encountered noticeable problems during *real*
shooting.
Thomas Bantel
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