This happens pretty much all the time, I would say more often on TV3 than other channels. The image changes contrast, in my opinion on a random basis, as some times it does it during the same scene, with no major change in scene composition (light, subject changing position, etc). It is perceived as a sudden increase in luminosity, but a lack of contrast. I would say sometimes the image looks "milky". At the other end, is a good nice contrast.
The tv is not unwatchable, but I find it very annoyng. The TV (Sony Bravia D series) has in its menu a feature named ACE (Advanced Contrast Enhancer), which does exactly that, dynamically adjust contrast during playback. I had this feature turned off, but the image still does that.
So, I assume is from my video card. Reading a list of features the 8600GT has, the "dynamic contrast" shows up again. (What do these people have with this feature?). The problem is, the nVidia interface is sooooo basic, you can adjust colours and screen resolution, and... well, that's pretty much it. Not even screen position adjustments!
Is there a way to access all the super-features listed for the graphic card?
It also says "Purevideo HD" on the list. But a deeper search on the net revealed there some download (which is NOT freeware), like a driver, to get Purevideo HD working. What's the story with that? On the box says DirectX 10, but the installation CD comes with DirectX 9.0c; I think the list shows what the product CAN do, not what it DOES "out of the box".
I used DVI/VGA and DVI/HDMI signal to the tv, same story. (That means is not the cable, right?). The card has component output, didn't try that yet. I don't see why the "component" should be better than DVI/HDMI.
Any ideas how to get rid of that contrast change?