I got some time to tune my pj today (since the kids started back to school). I've uploaded 2 graphs of gamma before and after.
I leave all my basic settings at default (Contrast, Brightness, Color, Tint.) I dis-able lots of video processing in my pj (Iris, Color Correction, Gamma Settings) becuase my pj gets some strange artifacts and they all dissapear without the extra processing.
So All I adjusted were cuts, gains and panel drivers. Panel Drivers is like a master contrast for each color and I needed to adjust those.
You see in the end I went from a gamma of approx 1.8 to approx 2.1. I "should" try to raise it a bit more but on my projector a slightly low gamma makes a very great picture.
gammaafter.jpg 196k .jpg file
gammabefore.jpg 192k .jpg file
illum-after.jpg 157k .jpg file
illum-before.jpg 158k .jpg file
Settled? I can answer and further queastions or concerns.
The Gamma looks flatter in the first (Before)graph... true.
Neither before or after is perfect. It's all I had time for today.
My projector comes with a gamma correction software you run on a PC and then upload to the pj via serial cable. It lets you adjust the curve of each primary color and it lets you nail RGB balance and gamma. However, My pj also has known issues with blocky, blotchy blacks and in my experience dis-abling more of these types of corrections eliminates those problems. What you wind up with is worst graphs but better picture... Another topic completely.... Which I think will warrant another thread.