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Author Topic: Lightroom 5: Any differences in custom camera color "profile" rendering?  (Read 2377 times)
Ellis Vener
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« on: April 29, 2013, 10:44:40 AM »
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I have not done a direct apples to apples comparison so this is more in the nature of a background knowledge  question.

If one has previously created custom Adobe DNG  profiles, using either X-rite's ColorChecker Passport or Adobe's DNG Profile Editor software, or used Datacolor's Spyder ColorCheckr target and software to create an H/S/L preset (please try to refrain for right now  from introducing  sidebar discussions about one approach versus the others),  will the changes in Lightroom 5's new processing algorithms either require reprocessing the target shots or will yield better results?
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Ellis Vener
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Creating photographs for advertising, corporate and industrial clients since 1984.
digitaldog
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« Reply #1 on: April 29, 2013, 11:27:56 AM »
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will the changes in Lightroom 5's new processing algorithms either require reprocessing the target shots or will yield better results?

What changes? PV2012 should be the same as well as legacy processing.
« Last Edit: April 29, 2013, 12:30:35 PM by digitaldog » Logged

Andrew Rodney
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Ellis Vener
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« Reply #2 on: April 29, 2013, 11:48:20 AM »
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If I knew what changes were being made "under the hood" I wouldn't be asking would I? I understand that Process 2012 (I can read my tab) is still current but does that necessarily mean that changes to other algorithms throughout Lightroom 5 won't have an effect on color rendering and color relationships?
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Ellis Vener
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Creating photographs for advertising, corporate and industrial clients since 1984.
digitaldog
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« Reply #3 on: April 29, 2013, 11:56:43 AM »
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I don't believe there are any changes in terms of the color engine processing but I could be wrong. When this happens, you're usually told so by the PV version.
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Andrew Rodney
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Schewe
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« Reply #4 on: April 29, 2013, 12:26:22 PM »
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I understand that Process 2012 (I can read my tab) is still current but does that necessarily mean that changes to other algorithms throughout Lightroom 5 won't have an effect on color rendering and color relationships?

There are no processing changes in LR5 that would require new DNG profiles...the only new DNG profiles needed would be for new cameras that were not supported in LR4. Bottom line? Don't worry about it. :~)
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Ellis Vener
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« Reply #5 on: April 29, 2013, 12:42:03 PM »
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Quote from: Schewe
There are no processing changes in LR5 that would require new DNG profiles...the only new DNG profiles needed would be for new cameras that were not supported in LR4. Bottom line? Don't worry about it. :~)

Thank you Jeff, I find that to be a more definitive answer. Do you know about H/S/L settings?
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Ellis Vener
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Creating photographs for advertising, corporate and industrial clients since 1984.
digitaldog
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« Reply #6 on: April 29, 2013, 12:58:05 PM »
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Pretty easy to check any such changes yourself. Render two images in the two versions the same way, subtract in Photoshop*. Better yet, make a color list in ColorThink and you've got dE values and vectors**.

*http://digitaldog.net/files/Apply_Image.pdf

**http://digitaldog.net/files/How_to_compare_deltaE_of_ColorLists.pdf

Teach a man how to fish....
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Andrew Rodney
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« Reply #7 on: April 29, 2013, 02:00:29 PM »
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Thank you Jeff, I find that to be a more definitive answer. Do you know about H/S/L settings?

None of the image adjustments have been altered in PV 2012. If ANY of the processing adjustments had been changed, there would be a PV 2013.

The only fundamental change between LR4 and LR5 is the addition of a new tool, Radial but with the exact same adjustments and the Spot Healing which introduced non-circular healing. LR4 spot healing will render correctly in LR5, but LR5 non-circular healing can not be rendered in LR4 (or ACR 7.x). And the Upright corrections which are also not backwards compatible...
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Ellis Vener
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« Reply #8 on: April 29, 2013, 02:57:49 PM »
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Once again, Jeff, Thank you.
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Ellis Vener
http://www.ellisvener.com
Creating photographs for advertising, corporate and industrial clients since 1984.
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