Bob Talbot wrote:
> You don't know what anyone means by sharp till you have seen thier
> work. When someone says (no vignetting) do you know whether they are
> talking about full frame of the middle 70% (utilised by D&P printing
> of negative).
True. I haven't seen noticeable vignetting on mounted transparencies with the
20-35/3.5~4.5 using a B+W polarizer, but that's not necessarily definitive.
However, when I accidentally mounted two regular-mount B+W filters on that lens
there was noticeable vignetting at 20mm on standard machine prints. :-)
Technically speaking, to the best of my knowledge, pretty much all wide-angle
lenses vignette to some extent, in the sense that the corners of the image are a
bit darker than the center 70%. What I had in mind was the very noticeable
darkening that occurs when a filter mount intrudes into the frame sufficiently
to register on the film. Not exactly the same thing.
fcc
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