Camera Raw: Invalid ICC profile after Grayscale conversion in ACR 7.3

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  • Updated 6 years ago
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Hi - Using CS6 (64bit) and converting an RGB image to Gray Gamma 2.2 in ACR 7.3 - when I then try to openthe converted tif image - I get the following message "The embedded ICC profile cannot be used because the ICC profile is invalid. Ignoring the profile". Metadata shows the color mode as RGB and Color Profile as Gray Gamma 2.2

This (invalid ICC profile) was never a problem in CS3, nor is it a problem with images previously converted to grayscale with ACR 4.6

I saw another member had a similar/same problem, but there was no posted solution

Any help will be greatly appreciated.
Thanks in advance
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David Shackleton

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Posted 6 years ago

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Photo of Russ


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I appear to have found a bug in Bridge/ACR. When opening a greyscale tif file into ACR from Bridge, adjusting it and then resaving it, again as a greyscale tif, Photoshop cannot open the file, giving an Invalid Profile error. If I instead resave the file as an RGB, it opens ok. I have used this workflow successfully in the past and the error has just recently appeared, so I wonder if the problem lies in a recent ACR update? Using CS6 on a Mac.

This reply was created from a merged topic originally titled
ACR7.3: problem when resaving greyscale TIF files (invalid profile).
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Dorin Nicolaescu-Musteață, Champion

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Known issue.

Jeff Schewe posted here:
In the meantime the workaround is to process the images as sRGB (gamma 2.2) or ProPhoto RGB (gamma 1.8) and convert to grayscale in Photoshop.
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1. Start Photohop CS6 (64 Bit on Win7 in my case)
2. Load a raw into ACR dialog
3. Convert the image to grayscale
4. Set working color space to one of the "gray gamma x.x"
5. Export (save as) the image as JPEG/TIFF/PSD directly from the ACR dialog

Result: The exported file is corrupted. It displays completely red, with some irregular rectangles with strange random patterns. Loading the image in PS results in a warning message that the color profile is invalid.

However, when opening the image directly in Photoshop (button "open image" or "open copy"), it displays correctly in Potoshop.

It seems to be reproducible with all kind of raws. I concretly testet using a raw from a EOS 40D.

Edit: Added an example (I cropped the raw in ACR, no other changes except conversion to greyscale):

Edit 2: Just noticed that this is a duplicate of

This reply was created from a merged topic originally titled
Camera Raw 7.3: Grayscale image in "gray gamma x.x" color space is corrupted on export.
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Marie Parrour

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J'ai constaté un bug dans Caméra Raw
J'ai CS6 et Camera Raw 7.3
Voici mon observtion :
- je transforme ma photo en niveau de gris dans Camera Raw, dans la rubrique TSL (niveau de gris)
- j'enregistre ma photo en JPG directement dans la fenêtre de Camera Raw (en bas à gauche)
- j'ouvre cette photo dans Windows
== > celle-ci apparait toute rouge ; comme si il n'y avait que la couche rouge !!!

Je ne suis pas la seule à avoir constaté ce problème : 2 autres personnes de mes connaissances ont observé le même bug.
Merci pour votre réponse,

Marie Parrour

This reply was created from a merged topic originally titled
Problem within Camera Raw 7.3 along with CS6 (TSL grey levels ).