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Author Topic: How to get Lightroom to use DCP profile for Sigma Merrill?  (Read 406 times)
Chris2500DK
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« on: June 05, 2014, 03:34:55 AM »
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I've taken a picture of my colorchecker and converted it to TIFF in Sigma Photo Pro with just white balance and exposure corrected.
I've put the TIFF into Lightroom and exported it as a DNG.
Then I've opened the DNG in Adobe DNG profile editor and created a DCP profile.
This is saved in C:\Users\<x>\AppData\Roaming\Adobe\CameraRaw\CameraProfiles where all the other profiles are.

But when I import my Sigma Merrill images in Lightroom I only get the "embedded" option in Camera Calibration.

How do I make Lightroom use my profile?
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Denis de Gannes
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« Reply #1 on: June 05, 2014, 05:07:14 AM »
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Are you working with a raw file? Already rendered images like tiff, jpeg will already have a profile "embedded".

p.s. I believe you should have used Lightroom to convert the raw file from your camera to DNG and then proceed to create the DCP Profile.
« Last Edit: June 05, 2014, 05:11:32 AM by Denis de Gannes » Logged

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Chris2500DK
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« Reply #2 on: June 05, 2014, 05:10:09 AM »
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Are you working with a raw file? Already rendered images like tiff, jpeg will already have a profile "embedded".

I can't work with the raw file, Lightroom/Adobe Camera Raw doesn't support Sigma Merrill raw files.

The Adobe profile editor only works on DNG files as far as I can see, so I wouldn't be able to create a profile from a raw file anyway.
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FranciscoDisilvestro
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« Reply #3 on: June 05, 2014, 05:50:09 AM »
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You cannot apply a DNG profile to a TIFF file, even if you exported it as DNG , since the TIFF file already is color space encoded and had applied the white balance factors.

Not all DNG are equal, at the end it is just a container.

You can apply DCP profiles to Raw DNG or Linear DNG (demosaiced only, not fully processed)

A commonly used analogy:
Raw DNG - Raw
Linear DNG - Half baked
TIFF->DNG - Full baked

Regards
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digitaldog
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« Reply #4 on: June 05, 2014, 09:07:49 AM »
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The Adobe profile editor only works on DNG files as far as I can see, so I wouldn't be able to create a profile from a raw file anyway.
Correct, you need to build the profile upon a DNG and the use the profile on raw files (DNG or camera raw files). The TIFF is rendered and the profile is out of the picture at that stage.
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Andrew Rodney
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Rand47
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« Reply #5 on: June 06, 2014, 08:28:56 PM »
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Correct, you need to build the profile upon a DNG and the use the profile on raw files (DNG or camera raw files). The TIFF is rendered and the profile is out of the picture at that stage.

I tried the OP's approach some time back, though in trying to use the flat field plug-in.  Finally dawned on me that that didn't work either.

I know we DP Merrill users are a very small user base but I sure wish Adobe could support them.  Now that the DP M Quattro is about to be released, I have little hope of DP Merrill support for my current Merrills. 

Rand
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