Let's give Doug a rest for a few days, and I'll ask some questions that other people can answer. (If anybody but Pete is still following this thread. :))
1. How do you set up bright/contrast & whatever to get good picture quality and minimize wear?
I have a good picture on 720p. Bright scenes are clear, dark scenes are clear, as I explained in post #377
. No black or white crush as far as I can see.
But to get this, I have the brightness set to 60, and this causes the back raster to be visible. Which means the CRT cannot go all the way to "black" like CRTs are supposed to. In really dark scenes I can see the raster overscanning onto the dark wall. This is really distracting. (Probably not for anybody else, but it is for me. :))
Also, the 3 rasters DO NOT light up at the same brightness level. Which I think means my Bright Bias is off, right?
I should be able to get good images without the raster visible, right? (How??) And it should also reduce wear on my tubes. If I just drop the brightness to where the rasters disappear, then dark scenes lose a lot of detail.Jrobbo's explanation
says the Bright Gain should be set so that the raster just barely light up when the Brightness is at the "correct" setting. What's "correct" ?
2. Along those lines, what is the difference between the Kelvin controls and the AWB controls? Are the AWB settings global and the Kelvin controls tweak individual memory slots, or...?
3. I have a lot of raster around the image. The raster overscanning on the wall extends for something like 15-20" outside the 89" wide screen. Too wide for a black frame to hide it.
Am I correct in assuming that you don't want much raster outside the image area? See my 720p raster
for an example. Does this look right, or should the image be filling more of the raster?
I suppose the ideal situation would be to move the pj forward until the image fills more of the tube face. I'm not likely to do that anytime soon -- moving it more than a few inches will involve a major project -- but I would at least like to reduce the amount of raster around the image so I don't see it overscanning onto the wall. AMPLITUDE (and its identical clone POSITION -> IMAGE SIZE) adjusts the whole raster. How can I increase the image size without increasing the raster size?
4. In that raster example, the dark area around the grid is raster, and the lighter area is raster where I've pulled the blanking in. How close should I bring the blanking into the image area -- right up against the image?