maxflinn:
hi fi newbie:
Well this part is hardly a selling point
Another fascinating fact that emerged during the day is that there's a
drop of around 50 per cent in high-definition quality when viewing in 3D. "We have found that viewers will accept a drop in HD quality for 3D," says Cameron. "Although we're using Full HD, 1080p transmission for 3D, there's a 5-10 per cent drop in HD quality at the production end, and a 50 per cent drop at the viewing end."
ah what does james cameron know
is he referring to the active system though ?? this stuff is foncusing
edit , i cant see why there should be a 50% drop in resolution when viewing , maybe with the passive system , but not the active , as each alternating image is 1080p , assuming the source is a specially made 3d bluray...
He never said anything in the quote about a drop in resolution. This doesn't happen on 3D Blu-ray because it is a full 1080 48p image. However the quality still drops to half of the bitrate because you are now delivering twice the frames in the same period of time and there has been no change to BD's overall maximum deliverable bitrate. On Sky (and it sounds like most other broadcasters) the bitrate will remain constant with what they currently deliver but the L/R images will be side by side in the frame so you're current 1080x1920 hd image will become a 1080x960. There's arguments as to how much the horizontal resolution affects viewing though and in the US many channels on their satellite systems actually deliver resolutions of 1400 or 1200 lines horizontally apparently that are stretched to fill the screen by the decoder.