It looks like a polarizing effect to me. Personally I don't use polarizers
with wide angle lenses with lots of sky in the image because I don't like
the effect. It's probably an individual thing. Great picture otherwise.
Frank Paris
marshalt@spiritone.com
> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Rob Geraghty
> Sent: Wednesday, January 31, 2001 5:33 AM
> To: filmscanners@halftone.co.uk
> Subject: filmscanners: Vignetting?
>
>
> Apologies to those who are using the digest, because the attached picture
> will appear as encoded ascii. A while back I was in touch with a
> guy from a
> stock photo company and I sent a low res jpeg of a photo of mine, which he
> claimed showed vignetting. Now to me, vignetting in the camera
> is caused by
> a wide-angle lens "seeing" the edges of a filter. Years ago I
> did make the
> mistake of putting a polariser on the end of a lens which already had a UV
> filter on it, and this certainly caused vignetting. But the effect I
> believe he was attributing to vignetting is caused by a polariser
> - the sky
> tends to be darker at the edge of the photo, sometimes on one side,
> sometimes both depending on the angle to the sun.
>
> Would anyone on the list call the variation in the sky in the
> attached jpeg
> vignetting? I don't find the effect objectionable, but are publishers
> really likely to?
>
> Obscanning: images which have this kind of effect may actually enhance it
> depending on the scanner settings used.
>
> Rob
>
>
