Digital BW, The Print

But soft proofing, as you say Daniel, does not change the file pixel values
and hence you can't save what you see.  There is a way to do what you want -
at least with respect to tonal range and relativity.  To include hue - the
warmth or cool hue information - I think would be very difficult.  At a
minimum you would need to present the image in colour.  The problem with
this is you need to reflect in a curve the complete mapping of pixel values
to print values that occurs when you print.  If the print space were the
same gamma as your workspace  - even though not of the same range - this
would be easy to do.  If it is not then it is quite hard.  Your best
approximation and it is quite an exercise is to print a detailed step wedge
(the more steps the better), measure the printed densities of the steps,
convert these to pixel values within the same scale as your PS curves, and
create a curve "dialling in" these input/output points.  As you do this the
image on screen will get closer and closer to the printed image.  Because
this is a curve rather than proof, it alters the file's pixel values and
hence the result can be saved. A little tedious and no depiction of hue but
it gets you a lot closer to portraying the actual print.


> From: "Paul D. DeRocco" <pderocco@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Sun, 5 Dec 2004 09:15:52 -0800
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: RE: [Digital BW] online and print versions?
> 
> 
>> From: daniel [mailto:dnj@...]
>> 
>> is there some way to have photoshop save a jpg of the image so
>> that viewed online it will
>> have the same appearance as a softproofed version?
> 
> You really have no control over how an image appears online, because
> practically everyone will be viewing it in a non-color-managed program like
> Internet Explorer. About the best you can do is to convert to sRGB, since
> that's intended to be a good approximation of a "typical" display.
> 
> To mimic the gamut limitations of the printer, I suppose you could convert
> to the print space, and then convert to sRGB. Converting to the print space
> and then to your monitor space is what soft proofing does.
> 
> --
> 
> Ciao,               Paul D. DeRocco
> Paul                mailto:pderocco@...
> 
> 
> 
> 
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