RE: Dmax versus process?

I don't do all of them but I'd bet for carbon since you can use darkest
black pigments and the gelatine layer (which can be quite glossy
compared to plain paper) is thicker in the shadows. Gloss will
definitely improve dmax; I get log 0.3 - 0.4 increase by coating
semi-glossy (satin) polyurethane over the image, glossy polyurethane may
improve dmax further I presume. (BTW, IIRC, wet thickness of my
polyurethane coating is 30mils = 0.76mm...)

This is without regarding the adjective "enough" of course... It's
absolute. The answer to the question "Do you really need that much
dmax?" is highly subjective and image dependant.

Regards,
Loris.

-----Original Message-----
From: Yves Gauvreau [mailto:gauvreau-yves@sympatico.ca]
Sent: 01 Mayıs 2006 Pazartesi 18:16
To: alt-photo-process-l@usask.ca
Subject: Dmax versus process?

Hi,

say you make several prints using the same paper, maybe a step tablet to
keep it as simple as possible, what could one expect in terms print Dmax
from various process like Salt prints, Kallitype, Vandyke, Argyrotype,
Platinum, Palladium and pigment based process say gum and or carbon?

If there is some text somewhere on this, it would be fine. I know some
of you teach alt-process printing and I'm sure someone as an idea on
this, it doesn't have to be in absolute terms.

Thanks
Yves

PS. Please don't say try it out yourself...
Received on 05/01/06-09:37:03 AM Z