Official JVC RS20 / HD750 Calibration and CMS thread (NEW FIRMWARE V1.1) - Page 28

You're right about the brightness/contrast settings in Ricks PJ being for enhanced mode Chris, but in my experience there is no WTW/BTB clipping with the new firrmware (it was as you describe with the old firmware), which makes it not necessary to use HDMI enhanced mode unless some computer sources can't output in standard mode.

By the way if one wants to have all their sources in standard to make switching between them easier, it is possible to adjust contrast/brightness in the source itself (for example your BD player) in order to avoid the clipping. I find it really annoying to have to use different settings depending on the HDMI setting, so I have everything set to standard (wiht brightness / contrast to 0) and I adjust in the source if necessary to set WTW/BTB.

Thanks Greg, but that's not my experience.

With the original firmware, my BD-50 in standard mode and the PJ set to standard as well was clipping BTB (not visible on a pluge even with brightness pumped up). The only way to get it to show was to adjust settings on the BD-50. Same for WTW.

With the new firmware, BTB is visible if one pushes brightness above the default of 0 (HDMI standard for both BD and PJ). Although it could be an automatic update of the BD-50 firmware that happened more or less at the same time? I'll double check this.

I'll try to set the sources to standard and the PJ to enhanced and adjust constrast/brightness, that is something I never tried as I thought source and display had to match, thanks very much for the tip.

Edit: tried your advice to set all sources to standard, PJ to enhanced and adjust once. This seems to work very well, thanks.
Re clipping, it looks like your were right, it is still clipping with the new firmware. I have no idea why it stopped clipping at some point (or why I think it stopped). But the fact is it still clipping. Thanks for correcting this.

After reading the (excellent) review by GregR and the info kindly posted by TomH recently about SMPTE-C, I have re-calibrated my PJ following a new screen/lamp combination, and have used the opportunity to try calibrating for both Rec-709 and SMPTE-C.

I went back to my Carada BW as I couldn't get the Seymour XD material to stay in place on the Carada frame despite my best efforts, so the calibration has been made with a new lamp and the Carada screen (1.1 effective gain, 1.4 advertised). I haven't fine-tuned anything as I'm waiting for the new lamp to reach 100 hours. I got in my configuration (mid-throw) around 600 lumens calibrated (THX/6500K/High lamp/Iris Open) so I'm pretty happy with the new lamp.

I was really surprised to see that for most BD movies I tried, SMPTE-C indeed gave much more realistic skin tones, so thanks Greg for prompting the experiment.

I have also used GregR tip to leave all my sources to HDMI standard, setup the PJ to HDMI Enhanced and adjust brightness accordingly.
This worked very well, and I ended up with the following settings:

Brightness=-6
Contrast=4
Color=0
Tint=0
Iris=-9 to -5 depending on content, I calibrated to -7
Color temp: custom to 6500K
Gains (probably useless unless you happen to have a new lamp and a PJ similar to mine):
R=0
G=-14
B=-60
Offsets:
R=-1
G=0
B=0
Gamma: set to 2.4 in custom2

REC-709 (user1)
R=-14 -18 1
Y=16 -45 39
G=-15 -42 35
C=-2 -53 45
B=1 -19 -3
M=-5 0 -3

SMPTE-C (user2)
R=-5 -24 2
Y=15 -42 33
G=-42 -41 29
C=-9 -57 48
B=1 -25 3
M=-11 0 -3

Feel free to experiment with the two settings and to report how it looks like on your PJ/screen, especially regarding skin tones. I have yet to find a BD movie that gets more realistic skin tones with REC 709!

You may have missed the edit of my post, I checked and agreed you were right.

I use the AVS HD V1.2 disk. It has ramps to set brightness and contrast which I prefer to DVE, although I check brightness with DVE as I like its simple pluge patterns.