Originally Posted by lcaillo
Gamma should be adjusted to track as closely to the response curve appropraite for the application
I take a little pride in our tools for this purpose, even though in the not-distant-enough past I used to be a lot more dogmatic on the subject of the Rec. 709 transfer function. The area where I am currently dogmatic about is stamping out the "one number" fascination with gamma. I have seen systems that have a "perfect" 2.2 - 2.5 gamma (pick a number), which have HUGE issues with grayscale (crushed blacks, gray blacks, crushed whites, etc.). No matter which calibration tool you use, you need to think of gamma as a target that you have to hit multiple times, not just once and on average, to get a pleasing image in your environment.
Originally Posted by Edo Gálvez
Hmmm, I think you are saying that they should have gonne with a gamma standard aimed at 200 lux rooms. Maybe they didn't want to deviate that much from HDTV standards especially when TV and PC screens are pretty much the same these days. I wonder how many lux my room has with the shades closed and the lights on.
I am convinced that they did not want to deviate from 709, since part of the point of sRGB was to bring 709 to the PC universe. The issue is more of one of how one sets a "standard". For a standard to be credible, it must be a) realistic, and b) provide a collective experience that everyone can agree gets most of the major things right (i.e., people can nitpick at the margins, but not have widescale revolt).
sRGB, from what I can tell, fails at both of these. It is not realistic in that one of the major design goals -- colorspace for the web -- does not seem to match peoples viewing environments or content development environments (often, brightly lit office spaces). It also has significant comprises versus existing, de facto
standards (e.g., Adobe RGB) that make it too big of a compromise for the scale of its total ambition (e.g., end-to-end unification of web publishing and print publishing). Given this, and the fragmented market it seeks to serve, it's no wonder that it is having trouble gaining traction compared to, say, the Broadcast and Film industries with 709.