Originally Posted by michaeltscott
The artifact that I see, and lots of it, is posterization or "gradient banding". It's everywhere; watching the film some pops up all the time, from the Fox production logo onward. And as I said, I'm not streaming it, but watching a 9.14 Mbps VUDU HDX file downloaded to a PS3 (8481 MB for a 7424 second clip). I may be particularly sensitive to that, like some people are highly sensitive to 2:3 pulldown judder--I can see that if I try, but mostly won't notice it if I don't. I always notice gradient banding though I can easily ignore it.
I didn't see this at all - how is your TV/Monitor and PS3 calibrated?
On a LG Blu-Ray BD390 at with 20 Mbps connection and through a calibrated Panasonic 55VT30 Plasma it looked stunning (the TV was receiving 1080P YCbCr 24 fps with average download speed through the movie of just over 9 Mbps) blacks were black and shadow detail was great and with no sign of any banding (I have returned expensive local dimming LED TVs for banding)
We watched in a totally dark room from about 8 feet..
Have you tried any test patterns through the PS3 (for instance AVS HD 709 http://www.avsforum.com/t/948496/avs-hd-709-blu-ray-mp4-calibration
Like you I am very susceptible to banding (and black level issues) and I think I would have seen it if it was there.