Synth-DIY Yahoo! Groups Archives

online and print versions?

2004-12-05 by daniel

another newbie question...

what do people do when they want to display their photos online and in print form? the 
obvious workflow would be to manipulate the image to your liking, save a jpg, then turn 
on softproofing, manipulate further (eg, increasing contrast with curves), and then save a 
second jpg. but this is clearly not optimal. for one thing, it's not clear to me that you 
shouldn't do all your manipulations of the image looking at a softproof for the final print. 
in that case, there's no online version to be saved halfway!

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?

i suppose you could scan the print back in. if the online image is for selling a print, that 
would be the honest thing to do, i suppose. but if you view the online version as an 
artifact in its own right, you surely wouldn't want the information loss that would entail.

/daniel

RE: [Digital BW] online and print versions?

2004-12-05 by Paul D. DeRocco

> 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@...

Re: [Digital BW] online and print versions?

2004-12-05 by Steve Kale

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.

Show quoted textHide quoted text

> 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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Digital BW, The Print

online and print versions?

online and print versions?

RE: [Digital BW] online and print versions?

Re: [Digital BW] online and print versions?

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