U of S | Mailing List Archive | alt-photo-process-l | RE: curves and gum and Christopher James book

RE: curves and gum and Christopher James book

Judy, There is the practical side of color management in the computer
landscape and then there is the real world side. I don't know the references
that Yves is referring to, but what sometimes seems so simple....

In a few short years we've seen inkjet go from being nearly band on this
list to being a part of many of the processes. And at the same time, the
very printers and inks we use to pull off this digital process of negative
making have changed greatly.  

The curves that we use are very subjective to our process, materials,
papers, etc.  


Eric Neilsen Photography
4101 Commerce Street
Suite 9
Dallas, TX 75226
Skype ejprinter

> -----Original Message-----
> From: Judy Seigel [mailto:jseigel@panix.com]
> Sent: Thursday, March 06, 2008 9:36 PM
> To: alt-photo-process-l@usask.ca
> Subject: Re: curves and gum and Christopher James book
> Yves, Since I've never done PDN and never expect to do it, I don't
> SERIOUSLY care whether you're  blowing air or revealing truths.  Tho I
> admit being intrigued.  HOWEVER, if you're so smart (and I could believe
> that you are) you shouldn't be able to blow us off with just those phrases
> and titles we don't understand.
> Your assignment, should you accept it, is to put those statements into
> terms a gum printer, or the equivalent, could follow.  I would bet real
> money (say a beer) that not one university professor outside the math
> department in 50 would know what "linearized tone mapping" means, and just
> the phrase, "adaptive logarithmic mapping" could clear a college classroom
> in seconds.
> Which is to say, since you know so much, state these concepts in words,
> not jargon.
> ....looking forward to enlightment on a flatter gradient,
> best,
> Judy
> On Thu, 6 Mar 2008, Yves Gauvreau wrote:
> > Christina,
> >
> > I find it very strange that a University professor finds that linearized
> > tone mapping is hitech when it's in fact the worst approach one can use.
> It
> > is as if you never eard of Tone mapping operators (Adaptive logarithmic
> > mapping (F. Drago, 2003), Dynamic range reduction inspired by
> photoreceptor
> > physiology (E. Reinhard, 2005), Gradient domain High Dynamic Range
> > compression (R. Fattal, 2002) and others)
> >
> > Yves
> >