> >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
>
I�m currently looking into buying a flash for my Canon A2E. A couple of
weeks ago I was in New York and stopped by B&H Photo. I told a guy at the
counter that I had an A2E and I wanted to get a flash because the built-in
flash is often blocked by a lens or lens hood. I also wanted a higher
quality flash. He recommended the 540EZ. I explained that I had a Sigma
17-35mm lens and I wanted a flash like the 550EX that could cover 17mm.
(The 550EX was designed with the EOS-3 in mind, but is "compatible" with
all EOS cameras.) He said that the 550EX has the wrong technology for the
A2/A2E. The flash I should get is the 540EZ besides the wide-angle flash
coverage is only 1mm off. I know that one of the features of the 550EX is
that it has E-TTL but the A2/A2E doesn�t support that. I still haven�t
bought any flash.
I know that a 17mm lens is 104 degrees of view. Does anyone know the
degrees of view for an 18mm lens so that I could determine a difference?
Is the 540EZ more compatible with the A2/A2E than the 550EX?
Is the 540EZ better matched for the A2/A2E than the 550EX?
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