Sony 10HT color transition - AVS Forum
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post #1 of 4 Old 04-15-2001, 06:42 AM - Thread Starter
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Hello, I'd like to share to everybody my impressions of my new 10HT that has just arrived. It's a result of a dream that I could achieve...

Constrast is really something that isn't as good as CRT projectors but the color quality is very good that compensates the lack of contrast.

Now, yesterday watching a film I found something that was bothering me: even if the colors are very good, I found a problem with the skin, which the colors doesn't vary smoothly, it recalled me the "solarize effect".

Did I do something wrong in the adjustments? Any help would be appreciated!


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post #2 of 4 Old 04-15-2001, 11:49 AM
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Because of the extensive video processing done internally at only the eight bit level, getting the 10HT optimized does require careful adjustment of gain and bias, using the color balance of the "warm" color temperature as a reference. The Don Munsil FAQ discusses some the issues and a genearl procedure fairly well. It also helps to have a DVD player or HTPC setup with gamma control, and use a test disk such as AVIA to set the brightness and contrast range, and then use gamma controls to optimize the gray scale steps.

You don't describe anyting about how you've gone about setting up your projector. I've certainly seen posterization on 10HT's, particularly if the RGB gain and bias setup isn't optimum, and if the grayscale steps aren't dialed in. This is a potential weakness in any digitial projector; in that regard, a misadjusted CRT projector may be less annoying, because misadjustment will only put the light levels off, but it won't shift too much of the light variation to just a few bits of resolution.

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post #3 of 4 Old 04-15-2001, 06:48 PM - Thread Starter
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Well, after trying lots of films, I finally saw what was happening:

this "pixelization" happens everytime changing "good image" and "pixelized image", every second... it's not the whole scene, but can be a part of the picture. For dark scenes it is particularly annoying.

Now, I was wondering if this is happening because I'm not using Progressive Scan DVD (I'm using Pioneer 626 in Component Video). May I get better results if I use Progressive Scan DVD in this terms?


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post #4 of 4 Old 04-16-2001, 08:39 AM - Thread Starter
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Hello, I did a research in other forums to see if there's someone with this problem.

I found it on http://www.thebigpicturedvd.com/dcfo...D27/2162.shtml


Actually the pixelization occurs during night and day scenes. Very apparent on scenes of blue skys or bright matte backgrounds. Not confined only to dark backgrounds.
Yes the pixelization does seem to 'pulse', even in bright scenes.
I will try fiddling with the contrast settings, but honestly, I never noticed the problem before and now all of a sudden it has plagued all DVDs.
Do you think it could be a problem with one of the LCD panels, or perhaps dust?? I don't know enough about the inner workings of the 10HT. I called the Sony Tech Dept but they are kind of reluctant to come to my house. I had to yell at the Manager to get service. They will drop by on Mon next week.
But this pixelization really bothers me, as well as the numerous dead pixels which have began to appear.


I don't have any problems of dead pixels (I saw just one so far), but I didn't see any conclusions...

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