Originally Posted by Brian Feldman
I have experimented with changing the values in the Lumagen and you definately want to be gentle with the changes. Especially in the lum (gamma) settings.
The best results that I was able to obtain was to simply substitute the 10 IRE with 7 and raise the Lum value to 9.5 I left the 20-100 IRE values at their default lum values. This along with the gamma adjustments that I made in the G90 has netted me the best results. The gamma is not too aggressive where it washes out the image but there is just enough to prevent any black crush and provide subtle details to very dark scenes. The fade to black in an image is superb.
Watching Star Wars the other night was awesome. When they display the star field with nothing else in the image the effect is like you are literally floating in space. No grey appearance or washed out look, simply inky black background with pinpoints of stars.
Your description makes me smile
I'll mention this to my neighbor for his G90. That may be why he was inclined to set the Lumagen back to flat line (the tse curve we replicated may have been too aggressive for his liking). He may be more inclined to just make the small tweak that you made.
Side comments on the tse box/gamma curve. I use a tse box on my BG808 for gamma boost. Some say it's too aggressive for a Barco. I also have an external moome transcoder. Some have said variously that the moome crushes black's or in other cases washes out the colors
In any event I did notice that the gamma results one gets from a tse and/or moome depends upon how they are connected (interplay of all the little amps I suppose). For me the moome completely washed out the image when I directly connected the it into a tse box...horrid. So I switched things up. The best combo I have come up with so far (to get inky blacks and vivid colors) is:
In the stack:
Oppo DVD==>DVI 2 foot cable out
DVI in to Moome==> RGB 1.5 foot cable out
RGB in to Extron==> 25 foot RGBHV snake out
At the projector:
RGBHV in to tse box==> 1.5 foot RGBHV cable out
RGBHV in to Barco
Complicated and messy I know (purists probably hate me) but I think the results are really sharp with great color reproduction...inky blacks too. I've compared it to my neighbors G90 as a reference. True, his is more vivid, richer looking, razor sharp, with a jaw dropping gray scale! But I'm not too far off from that. Still impressive on HD.
1) Oppo DVI out-using DVI reduced the static and noise in my video signal by a factor of at least 10.
2) Moome-simply transcodes to RGB but can't drive a strong signal
3) Extron-drives the signal up to the Barco to make sure its 700 mV (scoped and it is)
4) tse box-for gamma boost.
5) Getting the Barco amps (scoped) and G2's just right was also really important.
Thats what I've found out by messin' around. FWIW