Originally Posted by Deja Vu
The problem with "gamma correction" is that it will likely reveal the limitations of DVD, especially poorer transfers. By boosting gamma (contrast for the darker areas of the image) all sorts of artifacts can potentially rear their ugly heads and so one should be aware that this isn't a panacea for black level issues. Raising black level (brightness) doesn't seem to cause as many problems, but of course it defeats our objective.
Denon DVD players (some of the more expensive ones) have ten point gamma correction and this might just be the tool some of us are looking for.
Your post seem a little confused, TSEs circuit fiddles with gamma, which you say is a bad thing, you then recommend instead a dvd player that fiddles with gamma . There may be some merit to your "artifacts" argument, but I'll wait to see what image the circuit actually produces. The banding tse sees may be a result of over boosting the signal, so as to better see the IRE range the circuit effects.
EDIT:Remember, the aim of the circuit (I understand) is to be able to tweak the output of the projector to fit the standard display device gamma curve (2.20) the source material was (should have been) transferred in expectation of, not to twist the gamma curve like a pretzel, or adjust the gamma of the whole curve to reveal black detail.
EDIT: If limits in the quality of the source material are revealed by the fix, the solution would be to improve (or at least blame) the source, not to blame the circuit, or the projector.