--- "Icoz, Evrim" <[EMAIL PROTECTED]> wrote:
> What's the advantage of having a constant aperture
> zoom then? Aren't we
> losing useful aperture at the shorter end if we are
> limiting ourselves to
> the center?
Not really. The optics of the lens are such that to
have (for example) a 70mm f1.2 at the wide end of the
70-200/2.8 would either perform poorly and/or vignette
badly, unless very large diameter and very costly
glass were used.
=====
Bob Meyer
I wish I knew what I know now, when I was younger...
http://www.meyerweb.net/epson
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