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1. Re: Printing in Lightroom ...
Jeff Schewe Mar 31, 2013 9:47 AM (in response to AttilaHan)AttilaHan wrote:
... what is its file format and its color space?
There is no "file format" to the image it's simply the image data, and as to the color space, are you having LR manage color or the printer? Makes a difference...if LR is manageming color, LR sends the image data to the print pipeline in the color space of the printer profile you selected. If you are sending the image data managed by printer, LR is sending image data tagged as ProPhoto RGB colors with a linear gamma and the printer does the color transform.
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2. Re: Printing in Lightroom ...
AttilaHan Mar 31, 2013 10:30 AM (in response to Jeff Schewe)Thanks a lot Jeff ...
I have one more question, if you have more time for me.
Is there any difference between converting from linear ProPhoto RGB to printer profile and converting from 1,8 ProPhoto RGB to printer profile?
Are "print adjustment" sliders (on the "print job" window) there, because we're converting colors from linear ProPhoto RGB in Lightroom?
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3. Re: Printing in Lightroom ...
Jeff Schewe Mar 31, 2013 10:50 AM (in response to AttilaHan)AttilaHan wrote:
Is there any difference between converting from linear ProPhoto RGB to printer profile and converting from 1,8 ProPhoto RGB to printer profile?
Well, yes, regular ProPhoto RGB has a gamma of 1.8, LR's flavor is ProPhoto RGB colors and a gamma 1.0. In terms of the impact that might have in a print, it would be little or no impact. But LR can't send the regular ProPhoto RGB gamma 1.8 anyway, so it doesn't matter.
AttilaHan wrote:
Are "print adjustment" sliders (on the "print job" window) there, because we're converting colors from linear ProPhoto RGB in Lightroom?
No...the Print Adjustments are there to provide a method of dealing with prints that are too light/dark...has nothing to do with LR's color space.
AttilaHan wrote:
I have one more question, if you have more time for me.
Actually, that was two questions...
:~)
In the grand scheme of things, you're trying to make this more complicated than it really is...
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4. Re: Printing in Lightroom ...
AttilaHan Mar 31, 2013 11:35 AM (in response to Jeff Schewe)Well, yes, regular ProPhoto RGB has a gamma of 1.8, LR's flavor is ProPhoto RGB colors and a gamma 1.0. In terms of the impact that might have in a print, it would be little or no impact. But LR can't send the regular ProPhoto RGB gamma 1.8 anyway, so it doesn't matter.
So, can we say that ... printing from Lightroom with linear ProPhoto RGB and printing from Photoshop with regular, gamma encoded ProPhoto RGB don't have any important difference.
Actually, that was two questions...
:~)
In the grand scheme of things, you're trying to make this more complicated than it really is...
))
I've just started studying color theory and management ... it's fun but I'm a little bit confused and trying to place single pieces into the whole framework.
Thanks a lot for your helps.


