Digital BW, The Print

"Roy Harrington" <roy@...> wrote:


Hi Roy

I don't know my self about this either. However I think a person who would
know would be Bruce Lindbloom at <brucelindbloom.com>. He is very
approachable.

You may already know but Bruce has a comapanding Calculator on his web site
for converting between L*, Y, Density & Gamma values. Could be that
photoshop uses one of these other functions for monitor display?

The calculator is in the "Calc" section of his website. There is also a very
interesting blurb under "more info" within his companding calculator.


After I Have liniarised QTR I create an ICC profile using ColorSynergy
software. This solves for me the screen mismatch problem.
The software effectively makes its Tone reproduction curve. Looking at the
Tone Reproduction curves in the ICC profile they all look pretty gentle and
very similar to each other in magnitude for the inkset I'm working with.

Hope this helps.

Kind Regards
Peter Miles




> Message: 15
>  Date: Wed, 12 Nov 2003 20:45:13 -0000
>  From: "Roy Harrington" <roy@...>
> Subject: Re: QTR printing lighter than on screen...
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Steve Kale"
> <stevekale@b...> 
> wrote:
>> I recently calibrated my monitor and Epson 2100 with Gretag Macbeth's Eye-One
>> Photo system.  When I use QTR with Carl's curves my prints are about 1/2 a
>> stop or so 
>> lighter than on screen.  Is this just the difference in printer production
>> tolerances (ie I
>> should really construct my own QTR curves for my own printer as I have done
>> for 
>> colour work) or something else?  I am assuming that in a well calibrated
>> environment I should be getting exactly what I see on screen.  Is the QTR/B&W
>> world 
>> the same as colour in this regard?
>> 
>> Cheers
>> 
>> Steve
> 
> Steve,
> 
> I've also experienced the same thing.  I don't know the reason -- I'd
> also think if everything is calibrated it all ought to match.  Fortunately
> its quite easy to create a Proof Setup so you can compare the screen
> and the print.  Tyler Boley has a nice write up for doing this in the Files
> section of this group.  Check out:
> 
> Image Processing>Matching Your Monitor view to Your Prints.pdf
> 
> This is well worth the effort.
> 
> Roy