Marius Sundbakken wrote:
> I've tried to find an answer for this on the net, but without success so I
> dare ask here ;-)
>
> I have a Tokina 19-35/3.5-4.5 (77mm) I want a red filter for (Wratten 25 or
> 29). Do I need a super-thin filter for this lens to avoid vignetting?
>
> B&H have B+W "Extra wide" and "Slim" filters (on special order), but these
> are very costly and they are not even multi-coated. Would a regular (not
> slim) Hoya HMC (for half the price and "twice" the coating) work without
> producing dark corners? I've read that the Heliopan filters are in general
> thiner than other brands. Would a regular Heliopan filter be sufficient
> (by comparison: I have a B+W filter and it's definitely thicker than my
> Hoya HMCs)? Again, these are more expensive than the Hoyas and not
> multi-coated.
>
> - Marius
Marius,
my experience with the Tokina 19-35 is that you need the slim filters to avoid
vignetting specially at 19mm.....
I have Hoya slim filters and have not noticed any image degradation. A B+W
would probably cost almost as much as the lens!
Bob
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-73 de Bob [EMAIL PROTECTED]
Everybody has a photographic memory. Some just don't have any film.
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