3 replies to this topic

[pheggie]

BBC responds to accusations of half hearted approach to 3d programming

http://www.3dfocus.c...-3d-shows/13231

[MLXXX]

I believe the reason the 3D has had a lukewarm response in Britain is because the technology is compromised, reducing the viewing enjoyment:

1. A half-width side by side picture even using the 1920x1080 format* provides inadequate horizontal resolution for the 3D effect to be satisfyingly clear. (I myself, despite being stongly attracted to stereoscopic 3D, find 960 + 960 suitable only for close ups, not medium distance shots of a sports field, etc..)

2. The use of a 50Hz television standard results in shutter glasses operating at 100Hz, a suboptimal rate compared with the 144Hz at a public cinema. There is flicker, and a phase delay, between presentation of the Left and Right versions of each deinterlaced frame. (Televisions using passive glasses overcome the phase delay but introduce a fine venetian blind effect.)

3. The use of an interlaced format (50i, also known as 25i) reduces resolution during movement, reducing the clarity of the 3D effect for viewers concentrating intently on the action.

I find there is a world of difference in 3D satisfaction between watching

• a 24p 3D movie in a cinema at an alternation rate of 144Hz with 2K horizontal resolution; and,
  
• television coverage of 50i side-by-side 3D sport at an alternation rate of 100Hz, with only 1K horizontal resolution.

After recently seeing the Life of Pi on a home cinema at 144Hz and Full HD resolution (1920x1080), and being mightily impressed with the 3D, I nevertheless found my eyes yearning to see more detail. Only with the additional resolution available in an IMAX 3D theatre, have I been really satisfied with stereoscopic 3D video.

_____________

* Here is an article referring to the increase to 1920 horizontal pixels by the BBC HD channel for the London Olympics 3D coverage: http://www.bbc.co.uk...r_wimbledo.html

Edited by MLXXX, Yesterday, 07:51 PM.

[cwt]

If the channels got wise MLXXX they would utilize the method I posted in another thread that would help increase the res from SBS at least though not to bd's frame packed rez or a multiple of 24p for flicker reduction  like 144hz

http://www.3dfocus.c...oadcasting/8800.

I dont mind sbs bd rips on my epson but on my 2nd smaller lcd even full 3d bd iso's dont do the trick ;too small . Not a lot of big tvs in most  uk small homes /bedsits was thinking too ..

[MLXXX]

That tiled method could be very useful: recognisable 2D picture on an older TV, and full screen 2D picture on an MPEG-4 AVC capable TV. Appears likely to require a set-top box for existing 3D TVs but would provide 1280+1280 horizontal resolution: quite an achievement.

Yes a larger screen certainly helps appreciation of the 3D effect.