Klaus Karcher wrote:I made a matrix profile based on ProPhoto RGB with the same primaries and whitepoint, but gamma 1 instead of 1.8.
Alastair M. Robinson wrote:
OK - how did you create this profile?
In Photoshop. I selected ProPhotoRGB as RGB working space, switched to "Custom RGB" (Photoshop adopts the key data from PhroPhotoRGB), changed the Gamma to 1 and saved the setting as ICC profile.
In the meantime - do you get the same results if you "target" your images to an RGB working space profile rather than a printer profile?
Yes, it's the same (I tried AdobeRGB). Even the "Normal Proof" in imgtarget looks completely wrong when using the Gamma 1 source image. The same conversion in Photoshop is ok.
And you use lcms for the transformations, don't you? I'm confused. Klaus