Hi,
I am struggling with the strange behaviour of monochrome adobe dcp profiles for the Ricoh GR3x. This affects any of the profiles, whether hard or soft monotones.
When I select one of the monochrome profile, strange artefacts appear on the image, especially in places with more highlights:
This is all the more strange as I have no problem with any colour profile. I also check this in Lightroom and Luminar neo - in those other programmes there is no such artefacts.
Any hints or guess how to solve this problem?
I am using Windows version of Photo Lab. this problem is present in both versions 6 and 7.
Post an example (raw-file) that you want a monochrome version of. Then I could check in PL6 or 7 (Iâm on windows). â There are different ways to do so.
I noticed the same problems when I was using monochrome Adobe profiles for the Nikon d750 with a Z6 camera. When I used the Adobe Z6 profile with the Z6 it worked. So somehow some profiles of different cameras are not compatible. But it should not be a problem normally, as it works in other raw converters.
something like this⌠I will test on Ricoh raw, but it seems DxO code might not be compatible w/ Look table (that clamps everything to greyscale )? pure speculation and nothing more at this point
Thank you for your answer, I was afraid of using profiles from another cameras I thought that it might looks not good but actually as you advise I can see that it can be used like this.
However, this does not change the fact that this is a problem in DxO that is not present in other raw editors.
no big deal, I already wrote a Matlab script ( you can do the same manually in a text editor or in excel or in whatever - it is a very simple fix ) to deal with the matter in semi-automated manner⌠the issue it seems is between how Adobe creates profiles and puts numeric data in HSV âlookâ lut table for hues math-rounding / bounds wise and how DxO deals w/ that data in there ( resulting in see-saw tone curve )âŚ
I quickly tested a fixed DCP profile vs original DCP profile in ACR yesterday and visually they are identical ( and surely no artefacts in ACR for original DCP as in DxO PL ) - I will check output from ACR bit by bit after work to see that it is not only my eyes ( because there might be something that is visually too small to notice ) and post fixed profilesâŚ
I wonder did you see my query to you regarding highlight clipping with DCP profiles here: LumaRiver Profile Designer v2 is out ... after a long while
I would appreciate your viewpoint, particularly if there is something I can do to alter the offending profiles so that they work in Photolab.
Thanks in advance.