Re: Minolta 500si and vignetting

[Cor Breukel <cor@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

On Tue, 18 Aug 1998, David J. Carlyon wrote:
Hallo David, 
I've seen your images,  one thing I can think of is that you maybe
have agitated to heavy during processing; you than get to much turbulence
around the sprocketholes; build up density thus the lighter parts on your
print. The contradicting is that you you only see it on one side of the
film, so maybe some lightleaking of the cartridge after all..


> I have a Minolta 500si, and when I shoot Konica IR film, I have no problem,
> but with the more sensitive Kodak HIE, I get vignetting along the bottom of
> the images (see
> http://scc.net/~david/Photography/Animals/choochoo-and-candy.html and
> http://scc.net/~david/Photography/Animals/grazing.html and
> http://scc.net/~david/Photography/Animals/grazing2.html for examples). I
> took cut a piece of black plastic liner used for photo paper, and used it
> to cover the window over the film cartridge, but the vignetting is still
> there. Might that plastic leak IR light? Or is it more likely due to a leak
> elsewhere (I don't see any other obvious culprits), or maybe IR focusing?
> 
> David
> 
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Cor Breukel

http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
"The Infrared Gallery"
http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html


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