Originally Posted by Meteor|WAR
I just had the exact same issue, see my recent posts in this thread.
In THX mode my G10 does 2.08 gamma (about 29 ftL) when I use the AVS HD 709 to set brightness but looks really good. I get the proper 2.2 gamma if I use the method described here
but it looks too dim/lifeless:
I concluded to say the hell with 2.2 gamma. It just doesn't look right on my G10. I think with some TV's you're better off just setting brightness with a pluge pattern.
Originally Posted by LarryInRI
Using the 0.65% method to set brightness only works if the gamma of your TV is 2.22 to start with. It doesn't work in reverse. Use the pluge method.
Originally Posted by Make73
Seems that USA models Cinema-mode and THX-mode limits max power of light to something around 30ftL.
SUB-BRT anything to do with this?
I think that calculating brightness or contrast is not a good option, better is measuring with HCFR´s near black and near white tests and also visual checking grayscale ramp or pluge so there´s not clipped blacks or whites at 16-235 area.alsavforum
I think you should check your basic settings at first, brightness and contrast.
Seems that at least brightness is too high because your black level is 0.040ftL at cinema mode.
Also some finetuning with RGB levels could be done, I would lower B-DRV at first.
(Zoom RGB page with right mouse button Scale-->RGB--> to 80-120% so it´s easier to see)
If you measure whole grayscale 0-100 at everytime it´s easier to notice how those SM adjustments affect to whole RGB area, not just 80/30IRE.
Thanks guys for the feedback! After being at it for several hours and after several attempts, and finally getting close to 2.0 flat Gamma, I have to agree with Meteor|WAR that the 2.2 gamma is not a desirable setting. It is my opinion that the picture in cinema mode just isn’t worth the effort. Even under very dark conditions, I think the calibration I achieved in "standard" still looks superior.
I wonder if that's what Panasonic intended for these sets, the weird non- exponential gamma on all modes except Cinema? It seems they want to vary the gamma as a function of light level. Maybe that's how they achieve the contrast ratios they brag about. Has anyone seen spec's for these TV’s broken down into picture modes (especially contrast ratio)?
I happen to be an Electro-optics engineer by trade, been doing it for 35 years. I also had a TV repair business back when, yes, they still had vacuum tubes
….and solid state was just coming out. Having said all this, I would be the last to claim that I'm an expert in the calibration business, especially having gone through this process. The guys that do this legitimately deserve every penny they get!
But being a "tweaker" by heart, I must say that I had a blast doing this. I still may try to tweak further, (but not in cinema mode
. ) At least my gray scale is much improved, the green cast was driving me nuts!
Last, I want to say this forum and the correspondence here is fantastic. I may be an engineer, but I know my limits. I would not have attempted the calibration at all if it wasn't for this forum and site. Keep up the good work guys!