Using the Logom gamma image http://www.lagom.nl/lcd-test/gamma_calibration.php#gamma-test-2.png
With my TV set to gamma 2.2, the 10% scale blends between 2.0 and 2.1 (gray), closer to 2.0 (green).
With TV's gamma set to 2.4, the 10% blending occurs at 2.125 (gray)
Unlike my PC & its monitor with the Adobe Gamma GUI sliders, I only have three gamma options on the TV: 1.9, 2.2, 2.4
If I believed the Logom chart, I'd think setting my TV to 2.4 would be best. However, all places I've seen where "users" offer their
calibrations for my model TV, seems 2.2 (default) is the norm (or not specified).
With TV set to 2.4, I like the deeper blacks, and the color pops more.
But maybe the color red (exp) should not shft to more maroon. If I were seriously determined, I'd hook the TV up to the PC and
use some gamma sliders on it to see where my TV best gets to real 2.2 (if that's the target for TVs...)
Photo enthusiasts & web developers recommend the gamma for Windows OS is 2.2 and Mac, 1.8. But TV, I'm not sure.
BTW, the PC's video driver gamma, Adobe gamma, and the Logom gamma chart give nearly identicle readings...
I use the Adobe sliders with the Logom chart visible while I adjust - the Logom is larger making it easier to finesse.
[ On my PC panel (NEC IPS), I have to get the gamma right to enable seeing all Black-Level / White-Saturation increments
(at the same time) on those Logom calibration images. Brightness/contrast is a part but alone won't get my panel that range.]
Back in the day, I adjusted brightness to some movie's shadow detail. Ok, I have it set to see all detail...
any brighter I don't get more detail only grayer black. Ok it's perfect (for that movie).
Now I see the AVSHD video and notice my brightness is not set right -too bright; I make it so 16 is invisible (black).
Back to the movie... I no longer see the seam of the black suit lapel as did with #16 (maybe even 15) slightly blinking.
I wonder if there is a point where detail isn't meant to be seen to its fullest extent and I should set #16 to invisible
and let movie detail fall where it may.
BTW, thanks for the time