Re: Source for Perutz film?

Rod Smith wrote:
> In article <rlpy7ot3f91.fsf@[EMAIL PROTECTED]
>,
> 	Toni Nikkanen <toni@[EMAIL PROTECTED]
> writes:
> >
> > I really enjoyed the daylight color rendition of Agfa Vista 200. And
> > especially the color rendition during sunset.
> >
> > However, scanning proved somewhat problematic: There were huge
> > roundish pale areas at the bottom and top of the frame, apparently at
> > the same spot as the perforations but in the image area
>
> These sound like surge marks, which are caused by uneven flow of
developer
> solution around sprocket holes. If so, this is an issue with development
> technique or equipment, not the film or scanner. How was the film
> developed? Surge marks can occur because of excessive agitation when
film
> is developed in small tanks. I've seen them on some
commercially-developed
> rolls in the 1980s (presumably done with "dip & dunk" machinery). I
don't
> know if minilab machinery could produce anything like surge marks. I've
> never heard of different C-41 films exhibiting different sensitivity to
> surge marks, but I can't rule out the possibility.
> 

Thank you. This explanation sounds most logical.