Lr/Camera Raw Improvements: 2. Export/save as 'Rendering Intent' options

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When 'exporting' or 'saving as' in Lr & Camera Raw respectively, give options for 'Rendering Intent' when changing color space.
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Frenchfries

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Posted 2 years ago

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Andrew Rodney

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See: http://digitaldog.net/files/05Rendering%20Intents%20and%20ICC%20profiles.pdf
The same is true in Lightroom. 
There's no reason to pick when exporting to RGB working spaces which only have one table (Colorimetric). Wouldn’t matter what you picked IF there were an option; there's only one RI in the profile. 
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Laura Kent

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I realize this is an old post, but I'm trying to understand the purpose of the Proof Preview rendering intent and how it actually relates when printing from a professional lab.  I am using my lab's Print Profile and just received prints back that match my monitor well, but they match the Perceptual intent instead of my preferred Relative intent.  It's a big difference.  I'd like to know if that's something my lab is choosing or if Lightroom has a setting where I can choose the intent when I export?  If I'm not able to choose, then what is the purpose of a lab giving a printing profile with different rendering intent choices? 

Clearly, my images can look at least 2 different ways based on the difference between the perceptual and relative intent.  Searching online and reading through Andrew's article explains what the different intents do- HOW colors get converted, etc., but nothing explains how I can actually choose an intent for my files for my lab.  As far as I can tell, my proof preview is just for me, meaning that if I select relative intent in Lightroom Proof Preview, that's not changing anything in the actual file.  If I print at home, I know I have an option to select a rendering intent there, but if sending an image to the lab, how can I control the output?   Andrew, while I understand your comment about it not mattering for RGB working spaces, I'm not sure that your answer is looking at all the reasons why choosing a rendering intent upon exporting might be important to people...   Does something exist that I can choose a rendering intent for an exported file that would be seen by a lab if/when the file gets printed?  A Proof Preview seemed to be reassuring when one of the rendering intent colors looked as good as the original file's, but it's not reassuring if you have no control over the actual printed output of said file.  

In case it matters- my iMac monitor is calibrated (Spyder 5 Elite), I'm using ProPhoto RGB in Lightroom and editing in Photoshop.  Exporting sRGB jpgs from Lightroom.   
(Edited)
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Andrew Rodney

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The first question would be, can you use the supplied profile to covert the image data? If not, we have zero idea if:
The profile you've got for soft proofing is even used at the lab for print. 
What Rendering Intent they use. 
You have no options IF you can't send them the image in the output color space. 
The idea, in a well defined color managed workflow should be NO different for a photo lab than if you were printing directly to a printer attached to your computer: you select the actual profile to be used, you decide what rendering intent, per image you like best, you maybe do output specific edits based on this (in LR, that's a Proof Copy) and you convert that data exactly this way and send that data to the printer. Sounds like you can't do this with your lab. End of story. ;-(
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Laura Kent

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Thanks for responding, Andrew!!

You threw me with your first question-as I think that’s sort of the question I’m asking... haha. Can I use the supplied profile to convert the image data?. I am pretty sure the answer is no and that I’m not supposed to convert the image to their print profile. As far as I know the print profile is just a more accurate way for us to tell what our images will look like when printed. Accurate, that is, IF they know what intent you want them to use...which brings me right back where I started.

You say I have no options if I can’t send them the image in the output color space. That’s what I want to do! That’s what I’m asking. I’m not sure that I can’t do this with my lab, I’m just trying to understand what my part should be when sending off prints. Is there a place somewhere in Lightroom that I’m able to select the rendering intent I prefer? If printing at home, it’d be on my printer (maybe an option in Lightroom print module). But again, I’m not printing at home so is the a place earlier in the process that I can control that and save it? Or is that always up to a lab? I know in photoshop I can choose how I want to render colors when I convert to a different working space, but I don’t see any options in Lightroom to officially choose how to convert the colors upon export. Is this possible and if so, how do I change it? I know I won’t visually see a difference on screen, but it clearly makes a difference in print.

You may have touched on a gem, Andrew, when you’re talking about a proof copy... “and then you convert that data exactly this way and send that data to the printer”. But then you said “it sounds like I can’t do this with your lab. End of story.”??? That’s what I’m asking. HOW do I do that?? I have always just viewed the proof preview, refrained from making changes when in that view (which would result in a proof copy), and exported the original file because I didn’t know what a proof copy actually did to my files. But maybe this is what I’m missing?? I know I’m not supposed to use the print profile as the color profile, but maybe that’s not what the print copy does...???

I’m just trying to figure out what I’m able to do-and what I might accidentally be doing without realizing- i.e. Is Lightroom deciding how to convert my files without me choosing/knowing?

Thanks again for your help.
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Andrew Rodney

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Ask your lab IF you can use their profile for conversion and send in that color space. If they say no, you’re hosed.
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Laura Kent

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You're right.  I'm hosed.  Millers Lab has apparently never been asked such a thing and my request is too specific (to print with relative perception) for them to accommodate.  Makes me feel like I'm missing something, I don't think I'm being too picky.  But most images look entirely different in Lightroom when I render it perceptually- lose highlights, skin tones turn orange, greens turn yellow...  Ugg.  They stay exactly the same when I render them relative, except if I have lots of red.

Do you know if ANY labs give clients a choice of their rendering preference?  Name dropping would be helpful here ;).

Is it possible in Photoshop to save the preferred rendering to the image itself when saving/exporting?  If so, how?
(Edited)