Quote:
Originally posted by Bob Pariseau
Bytehoven,
Have you checked to see whether the 2910 combination of 0 IRE and Black Expanded passes "Blacker than Black" data correctly?
--bob |
I have a DVD-r test disc I made with IRE values from 0 IRE to 100 IRE, and the 2910 seems to be properly seperating 0 IRE and 7.5 IRE. So, I would say it is passing blacker than black, or blacker than 7.5 IRE.
I have not checked to see if the Black Expansion set to Normal mode crushes 0 & 7.5 IRE. I will check that out and report back. It may because, the normal mode maps 16-225 as the grayscale range. EXPANDED remaps it to 0-246 grayscale, and here I think they might have meant 0-256, which is the actual grayscale range.
I forget the real IRE value of the blacker than black pluge area that should be made to disappear. I am using 0 IRE, and that may be a little lower.
Maybe someone could comment on the actual value of the black pluge on mose test discs.
I should also note, I have a seperate high white test pattern on my DVD-r disc, with single steps from 90 to 100 IRE. The 2910 also outputs these perfectly. The 2910 Contrast setting in the Picture Mode menu, can be made to crush the whites as you boost the contrast, but leaving it set to 0 fine. I think I just started seeing the 99 & 100 IRE steps merge as I went from contrast setting 1 to 2.
I have an analog waveform that I could use to test the composite video signal, but no way to test the DVI output.
In this regard, I am looking forward to a Secrets review of the 2910, to see if it is indeed identical to the 3910 in it's video section.