Originally Posted by maxdb
Then you have other settings that are incorrect or way off from what they should be. Gamma set to LOW produces the best images by far when everything else is set properly.
What other settings would affect this? Nothing else appears to reduce the effect except for gamma, and believe me, I've tried everything.
Originally Posted by maxdb
Are you sure you're seeing the iris? It moves quite slowly... takes 10 to 20 seconds to completely change in Auto 2 mode depending on scene content. The steps it moves in are so freakin small you can BARELY detect what it is doing with gray-screen test patterns, switching from bright to dark to bright, etc. It's a very gentle action that is extremely difficult to detect. If you are seeing something, it may not be the iris at all.
Then why does the "pumping" effect on certain scene changes (primarily day/night, etc.) disappear when I switch to fixed iris? Perhaps there is a problem with the auto-iris circuit in my set, but I strongly doubt that I could convince a service shop to do anything about it. It is usually subtle, not pronounced, but it definitely disappears when I use a fixed iris setting.
All of this goes along with my opinion that my 60XBR2 doesn't have quite as good a picture as my 50XBR1 had before the green blob appeared. Besides the above issues, the color hue and intensity often changes from program to program and especially from channel to channel. Two examples of this:
* I watch the SD Padres games on the local HD channel (channel4 SD). When the pitcher is facing into the sun and viewed from the side, his face's flesh tone looks good while his neck, which is in the shadow of his head, is greenish. This does not appear if I put the color intensity to "0".
* B&W movies often appear green or blue, rather than shades of grey. This effect also disappears when I turn down the color.
Also, greens like grass and leaves tend to be unnatural in color, too bright - even slightly yellowish, no matter where I set grey scale or color temperature.
I realize that much of the fault for these problems may lie with the source and some with the cable company, but it seems as if the XBR2's correction circuits do not work a well as the XBR1's.
The funny thing is, on the best channels and programs, the picture is still excellent. Many programs on Discovery HD, PBS HD and HBO HD and some programs on other HD channels are as good as the XBR1 showed; other HD programs and channels are not. And SD programming has universally poorer PQ, with blotchier color on flesh tones and more shift of hue and intensity from program to program and channel to channel.