Marek,
You should be able to find
a lot of information through internet. I remember seeing lots of articles on
this when scanner was becoming popular.
I had/have both
densitometer and scanner, so at one time (many many years ago) I tried it out,
and the measurement using scanner is quite reasonable.
Dave
Is there a way to measure the DMAX of a print with a scanner
/Photoshop? I do not have a densitometer at hand. I vaguely remember a thread
a while back, but could not find it. Marek
> Date: Sun, 13
Jan 2008 10:06:14 -0500 > From: sanking@clemson.edu > Subject: Re:
Fresson question > To: alt-photo-process-l@usask.ca > >
Reflective D-Max is just a term that describes the darkness of a >
print as measured with a densitometer, so it is expressed as a log >
value. Pt./Pd., kallitype and vandyke prints on art papers generally >
have a maximum Dmax of about log 1.45 - 1.55. Silver prints on glossy >
papers can have a Dmax of up to log 2.2 or even higher. A direct >
carbon print like a Fresson print will have a maximum Dmax of below >
log 1.4. Carbon transfer prints can have a reflective Dmax as high as >
silver papers, though this depends on many working conditions. >
> Reflective D-Max is a technical description and does not make any
> implication about aesthetic quality, though many pursue it for its
> own sake as they do detail and sharpness. > > >
Sandy > > > > > > > At 12:25
AM -0500 1/12/08, Judy Seigel wrote: > > > > >
>Now, however, a possibly dumb question... though I doubt anyone's >
>reading this far, so what the hey: What is "reflective D-Max"? >
>D-max on an opaque surface rather than in a transparency? Or? >
>(I've never seen that term -- tho, just ask me & I'll explain
ULF.) > > > > > > > >Judy >
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