>From: Skip <[EMAIL PROTECTED]>
>
>Grega Fenko wrote:
> > Hi Rick!
> >
> > Didn't myself, but I know a guy that uses it regularly on EOS 5.
> > I've only seen what his work on 10x15cm pictures and that it wignetes
>bad at
> > 17mm when used with 540EZ strait on, as 540EZ only goes to 18mm.
> > Others I'm sure will know more.
>
>Are you sure he has a Sigma 17-35? Because I have not experienced any
>vignetting with mine. A flash does not cause vignetting, only the edges
>of the lens or lens hood. What that may be is light fall off.
>Skip
Hi Skip!
540EZ with it's built in wide adapter covers only 18mm and Sigma goes to
17mm. Therefore flash does not illuminates everything that is captured on
film. Outhern edges are dark. That's what I meant by vignetting and only in
combination with 540EZ at widest setting. No such thing without flash use.
I guess 550EX would solve this problem as it covers 17mm.
Good light
Grega
http://fenko.8m.com
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