Originally Posted by Manni01
It's getting quite frustrating for me not to be able to try any of these new leads, but just to be sure this one is a dead end before we discard it, did you try the following:
- Check what is the saturation level on green in natural preset in normal menu mode (as I understand the CMS is accessible in this preset). If if doesn't show 0, then this is probably not going to work, but if t does shows 0, can you try the following:
- Go to service menu, natural mode. Reduce saturation to -30 on green.
- Measure the gamut
- Go to normal mode, natural mode. Reduce saturation to -30 on green.
- Measure the gamut.
If the two measured gamuts are the same (and green is still oversaturated), then this is probably a dead end.Otherwise, it means that the service menu adjustments are added to the normal menu adjustments, and there may be hope!
OK, I see where you are going with this now. I do not think I tested the same thing as you asked about above.
Here is what I did in this last test IIRC:
0) I selected Natural in the service menu and set the gamma to my custom gamma (to pick up my grayscale tweaks) and switched color from 6500K to Custom1 to pick up my gain/offsets.
1) Entered service mode and selected the Natural CMS and wrote down its defaults. Then within the service menu I performed the below steps.
2) I measured the OOTB Natural setting with custom grayscale at both 75% and 100%. xy was oversaturated as anticipated but Y was very close to its target % of W for all colors.
3) With a 100% pattern I adjusted Red using the service menu CMS so that it was desaturated back to its Rec 709 point with Y spot on.
4) I switched to a 75% pattern and remeasured Red there. At this point I was out of service mode (RS20 kicked me out once calibration disc momentarily changed resolutions upon switching patterns). Upon measuring I saw red at this % level had not really moved from the point where I measured it previously (acted like I never performed step #2).
5) I then reentered the service menu and adjusted Red on this 75% pattern back down so that it was at its target Rec 709 point and Y was spot on. Then I switched back to 100% red and out of the service menu.
6) I remeasured with the 100% red and now the problem showed itself. Red was way undersaturated and Y was off, and clearly looked wrong by eye (washed out looking).
7) Then I went back to the 75% pattern in service mode, and fixed red back to its Rec 709 point with Y spot on. I went back and measured 100% red again, and now it was once again way over saturated and Y was off.
So in summary, if you calibrate using 100% patterns than at 75% the colors haven't really moved and remained over saturated at that level. If you calibrate at 75% then it desaturates the colors measured at 100%.
Based on your message I now see the angle you were after and I hadn't tried it... If I'm following you correctly you are thinking that we should perform steps 1-3 in the service menu CMS, and then step 5 in the USER menu.
So to recap your approach, you are thinking we should use the service menu CMS to make a "global"-like CMS adjustment with the 100% patterns. And then use the USER menu CMS to dial in the colors from there? And that hopefully doing it this way will not then push up the saturation at the higher % levels. Is this what you are thinking?
Please describe what you want me to try and I'll give it another try the next chance I have.