[alt-photo] Re: Gum...again!

[Loris Medici]

Agree. Bisulfite clearing works indeed (and the cleared
greenish-to-neutral dichromate stain has an advantage of having
convincing max. density in less layers), OTOH it's an extra step
(nuisance) + even when cleared it affects the color balance (albeit
not as drastically as non-cleared stain), also bisulfite treatment
"MAY" cause softening and flaking (in micro scale! not in the literal
sense - see the bottom of the clearing bath; you MAY notice very small
pigment particles) which will affect the quality of the image.

Regards,
Loris.


2010/5/15 Katharine Thayer <kthayer at pacifier.com>:
> ...
> It's not that overexposure per se changes the color, it's that overexposure
> results in dichromate stain, which dulls the colors and needs to be cleared
> with a bisulfite compound.  But it's easier not to overexpose and not to
> have the dichromate stain in the first place.