AVS HD 709 - Blu-ray & MP4 Calibration - Page 108

Computers typically do not output standard video levels. So no, it is not reasonable to expect that calibrating for the computer would work for satellite.

Typically you want to play calibration video with the same video player that you'll use for playing other video, such as movies.

If you go with the description in the PDF for the second pattern the two should be generally close. I believe the first level above black is 20 on DVE, and I think Avia uses 19. So in certain conditions DVE will allow you to clip off a few video levels above black.
http://www.avsforum.com/avs-vb/showt...8#post20767638

I prefer to use a meter to set contrast.


Usually you don't have to worry about eye strain on most projectors, so clipping or color shift would be the main consideration. Clipping and color shift are typically related on most displays. What I mean is that if red clips before green and blue you will have a color shift away from red. Typically the color shift will happen where the color clips or a few levels lower. If you can objectively judge color shift, then probably use color shift as the primary consideration. When judging color shift it would make sense to use something like the grayscale ramp or APL clipping pattern, to limit the amount of information above reference white.


If the projector is subjectively bright enough for you, use the most conservative setting of -17. If you prefer to make the image brighter, use the higher setting of -4. It sounds like 17 may be too high and introduces color shift or has negative effects on the color patterns in Misc. Patterns A.

I am not familiar with your display, but my Sony has very little color shift at the maximum picture setting. My main point is simply that it's possible the maximum picture setting may be fine.

The CalMAN settings have to do with the automation they have built in, where the program can change the pattern. If you're changing the pattern manually it's doesn't apply. I would guess that it's probably some work to program the automation, so that's likely why it remains on the previous versions. For the most part I'm guessing, because the only automation I've used in CalMAN is with their computer pattern generator software.

Unless doing so causes other issues, generally with LCD based TVs (including most LED models) the recommendation is to use a very low backlight setting and a high contrast setting. If the lowest backlight setting is too bright, it's reasonable to also lower contrast (picture).


Yes, ideally the color clipping pattern in Misc Patterns A would go beyond the 235 marks. Not all displays can be as bright as LCD based TVs, so with other display types giving up limited contrast may be less reasonable.

If you don't have a way to measure the light output of the display, and there's no noticeable clipping or discoloration, all you can really do is to set it for whatever white-level you consider reasonably bright but not too bright.

There are some options mentioned in the PDF such as the glasses from http://www.costore.com/THX/welcome.asp