Re: negative puzzle


Tuba Oztekin (toztekin@davinci.mica.edu)
Sun, 21 Feb 1999 11:58:08 -0500 (EST)


what is the address to unsubscribe myself...

thanx

tuba

On Sun, 21 Feb 1999, Carl Weese wrote:

> Chris,
>
> This is just a guess but I think you are running into a mismatch between
> the spectral sensitivity of the specific film you are enlarging on and
> the color of your cold light tubes. The pyro stain somehow cancels out
> the problem, so might a "filter" of some sort. If this is a cold light
> with two sets of different color tubes, turn on the other set as well as
> the green ones and see what happens.
>
> I recently ran into streaks in negatives that only appeared in platinum
> prints: not when printed in silver, and not visible to the naked eye
> examining the neg on a lightbox. Apparantly the defects, whether caused
> in manufacture or in processing, are "visible" only to UV light. The
> manufacturer is examining them and I don't have a definitive answer
> about it yet. But you may have a somewhat parallel effect happening.
>
> ---Carl
>
>



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