On Thu, 26 Jul 2001, Cyril MARION wrote:
> I wonder about the top performance and adjustements of the 17mm f/4
> fish-eye. I bought one some monthes ago, and since then never managed to get
> a correct focus in the viewfinder for objects located "far". In fact, when
> the focus ring is on infinite, only the objects located about 6 to 7m are
> correctly focussed. The seller tells me that it is normal, and that with
> such a short focal even at full aperture the right focus is obtained from
> ~10m to infinite at any position of the focussing ring.
I don't know the lens you're talking about, but there's no reason it
shouldn't focus at infinity.
Does this 17mm have provision for back filters? If so, make sure
you're using one, at least the UV one. Back filters are part of the
optical design, and are not optional as filters you mount on the fron
of a lens. The way you describe it it sounds like you're missing it...
j
--
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Juan J. Buhler | Sr. FX Animator @ PDI | Photos at http://www.jbuhler.com
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