[quote=BeachComber;13049879I realize this runs counter in nature to my last statement, but I then found the picture contrast to be far too high. While Page 1 has settings in the mid to high 80s, 42 seems to be about right for me when Gamma is turned on.
Likewise, the Brightness of 51-55 seems too high for me. I have it at 48 - not that much of a difference, but with everything else..... In fact, I needed to crank it down even further for the outputs of the Directv HR20s.
Turning the Iris to Auto 2 just seems far too bright to me to where the black literally is glowing on the screen. I went to the opposite end of the scale and found Min to look the best on first blush.
Also, when I use Warm 1 or Warm 2 in the Color Temp, the white in the contrast scale is just too beige and not really white. I guess I can play around with the white balance and try to correct that, but again, this is out of the box. I have a Sencore CP5000 that I could probably try to tweak some settings, but since UMR will be here in 2 weeks from tonight, so I am sure by then I will have diddled more and he will be able to get deeper into the unit and service menu then I want to go at this point prior to his arrival.
I am really looking for any insight or comments. .[/quote]
You want the 100% white to be around 30-35 fL, your CP5000 should measure that close enough... that will help you get the Picture control set to th right value. I don't know what setting I'm using based on original factory settings because I put Picture and Brightness on 50 and used sub-bright and sub-contrast in the service menu to set levels. But it is FAR lower than the posts that recommend settings in the 80s would leave you with... I'm guessing it's probably in the 40s. I was getting well over 50 fL (might have been over 60, I can't remember) with the factory setting in the mid-80s. That's WAY too bright.
Also, you may want to consider an Ideal-Lume bias light or 2 for behind the XBR2... these fluorescents output light with a 6500K level helping your eye deal with bright/dark better. The bias light fools you into thinking blacks are blacker than they really are... a big help with these displays. These bias lights are sold at www.cinemaquestinc.com
by the manufacturer. As far as I know, these are the only ones available for home theater with the correct color temp in the light. Bias lighting should be around 3 fL with the display sett to 30-35 fL, your CP5000 can probably help you estimate that also - Ideal-lume sells filters for the bias lights in case they are too bright.
Your CP5000 isn't going to be very accurate with the XBR2 for measuring color or gray scale... you may do better eyeballing the gray scale.
With the Picture control turned way down and especially if you are using bias lighting behind the display, Auto 2 ought to work pretty well. With factory sub-contrast settings and user menu in the 80s, Auto 2 definitely is too bright.
Oh, you should be in power save mode also, that reduces max light output a bit. Who would have thought RPTVs would ever have TOO MUCH light? LOL!
I don't know where my brightness control is related to factory settings either... but you really can't "estimate" the Brightness setting without a test disc or test pattern. You need one of the DVDs with the THX Optimizer or a test/setup disc like Monster's, Digital Video Essentials, etc. I can't recommend Avia or Avia II because their gray scale window patterns are completely inaccurate, though other patterns are OK. The PLUGE pattern is what you need to set black levels. There will be either 2 or 3 black bars and you set the Brightness control so you can see 1 bar (2 bar pattern) or 2 bars (3 bar pattern, but read instructions re. how to use the pattern for each disc). When using the Auto Iris modes, you want to wait about 15-20 for the iris to quit moving if you change from a bright screen to a dark screen.
Try to get 100 hours on the lamp before calibration. After you are calibrated, measure the display with your CP5000, especially things like fL at 100% white. Then, as your lamp ages, you can compensate for the screen illumination levels changing and possibly even do a little color tuning if the color begins to shift away from the calibrated settings. You can do that all in the User Menu without worrying about getting into the service menu.
Experimenting with various Gamma settings is fine, with a 10-step pattern on the screen, the Gamma setting that makes everything up to 50% or so darker without losing any information is closer to what you want.
Calibration on these displays is a never-ending process. It changes as the lamp ages and changes again when you replace a lamp, so calibration shouldn't be looked at as a 1-time deal.