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 14 August 2006, 17:39 #1 petza Registered User   Join Date: Aug 2005 Location: UK / NEWCASTLE Age: 42 Posts: 230 how many colours has the how many colours can the pee wee get on screen at once
 14 August 2006, 17:57 #2 thomas Registered User   Join Date: Jan 2002 Location: Germany Posts: 5,584 Well, each pixel can have one of 16,777,216 colours. Given a resolution of 2048 x 1536 (which is quite big even nowadays), one can display 3,145,728 colours at once. 786,432 colours at 1024 x 768.
14 August 2006, 18:22   #3
petza
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Quote:
 Originally Posted by thomas Well, each pixel can have one of 16,777,216 colours. Given a resolution of 2048 x 1536 (which is quite big even nowadays), one can display 3,145,728 colours at once. 786,432 colours at 1024 x 768.
whoah

 14 August 2006, 23:40 #4 mr_0rga5m Tik Gora :D   Join Date: Oct 2001 Location: Round yo momma's Posts: 1,273 pee wee
15 August 2006, 03:59   #5
petza
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Quote:
 Originally Posted by mr_0rga5m pee wee
it means PC

 15 August 2006, 10:58 #6 thomas Registered User   Join Date: Jan 2002 Location: Germany Posts: 5,584 BTW, you need a resolution of 4730 x 3547 to have more pixels than there are different colours.
 15 August 2006, 13:27 #7 Galahad/FLT Going nowhere   Join Date: Oct 2001 Location: United Kingdom Age: 44 Posts: 6,728 The most absolutely useless thing about hardware that can display as many as 3million colours is that the human eye cannot distinguish anywhere near that many colours, so all in all, quite useless really!
15 August 2006, 13:57   #8
Toni Wilen
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Quote:
 Originally Posted by Galahad/FLT The most absolutely useless thing about hardware that can display as many as 3million colours is that the human eye cannot distinguish anywhere near that many colours, so all in all, quite useless really!
Try to do single base color (or grayscale) color slide that fills whole screen with less bits..

(and human eye can distinguish millions of colors, http://hypertextbook.com/facts/2006/JenniferLeong.shtml , result of random googling)

15 August 2006, 20:46   #9
Going nowhere

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Location: United Kingdom
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Quote:
 Originally Posted by Toni Wilen Try to do single base color (or grayscale) color slide that fills whole screen with less bits.. (and human eye can distinguish millions of colors, http://hypertextbook.com/facts/2006/JenniferLeong.shtml , result of random googling)

Sigh Toni, don't believe everything you read on the Internet by so called 'experts'.

Visit an opthalmic surgeon and ask a real expert..... I did and a Bit more reliable than 'random googling'

15 August 2006, 20:50   #10
Toni Wilen
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Location: Hämeenlinna/Finland
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Posts: 20,477
Quote:
 Originally Posted by Galahad/FLT Sigh Toni, don't believe everything you read on the Internet by so called 'experts'. Visit an opthalmic surgeon and ask a real expert..... I did and a Bit more reliable than 'random googling'
Sorry but I don't ever trust single person's opinion, at least my result has opinions from multiple persons

Added: Maybe there is some trustworthly enough scientific studies somewhere? This is quite interesting topic in my opinion (but probably has nothing to do with PC displays because of pixel number limitation and really tiny pixels?)

Last edited by Toni Wilen; 15 August 2006 at 21:15.

 15 August 2006, 20:52 #11 BippyM Global Moderator   Join Date: Nov 2001 Location: Nottingham, UK Age: 42 Posts: 8,631 I can see at least 3 colours so I'm ok Actually I'm colour blind so I'm fuxxored!
 15 August 2006, 22:10 #12 Qube Registered User   Join Date: Aug 2006 Location: England Posts: 206 The other issue is that current LCD only seem to show 16M, or in some cases lower. I did hear somewhere that to cheat and get lower (faster) ms update rates they dropped the colour count? Q;
 16 August 2006, 01:06 #13 NoX1911 2064   Join Date: Jul 2005 Location: Germany Posts: 170 8bit color precision is good but it still has limitations. Higher precision is already present in professional environments (RAW, HDR, photography,...) and it will come to consumer level as well. One of the proponents is John Carmack. http://doom-ed.com/blog/2000/04/
 16 August 2006, 02:37 #14 spiff Oh noes!   Join Date: Mar 2003 Location: Neverland Posts: 660 The problem should be that the screen hasn't got the colour range/contrast waaay before the number of colours is a problem...
 16 August 2006, 11:21 #15 redblade Zone Friend   Join Date: Mar 2004 Location: Middle Earth Age: 33 Posts: 1,069 So Galahad are you happy with just the 4096 colour HAM mode on the Amiga OCS chipset?
 16 August 2006, 19:38 #16 Galahad/FLT Going nowhere   Join Date: Oct 2001 Location: United Kingdom Age: 44 Posts: 6,728 HAM mode on Amiga was badly implemented, takes up too much DMA time and is useless for anything other than static images. HAM mode sucks!
 16 August 2006, 19:52 #17 Tony Landais Zone Friend   Join Date: Mar 2003 Location: uk Posts: 426 In post production we are jumping to 10 bits for HD TV format like movie industry already does. As far as I know they keep the same 8 bit range for the dark and only use the 2 more bits for the bright. Probably a good reason for that. here is a dedicated file format for 10 bits used in film industry http://www.cineon.com/ff_draft.php
16 August 2006, 21:36   #18
Npl
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Quote:
 Originally Posted by Tony Landais As far as I know they keep the same 8 bit range for the dark and only use the 2 more bits for the bright.
Sounds like the color palette Doom3 uses

 16 August 2006, 22:44 #19 Qube Registered User   Join Date: Aug 2006 Location: England Posts: 206 I think DVDs are 24 bpp, and some of them look pretty bad. If you pause you can see loss of colour (dynamic range anyone?), let alone mpeg2 being an old codec, all sorts of artifacts, if you get a smokey scene you are nackered! (aliens - pause and you will weep) I think the computer has to render an image from a set range in 16M colours (24bpp) or 4B (32bpp). Then the screen screws this up with its own limits. Then the human eye interprets this as pretty low since the eye has a large dynamic range of colour and brightness. Its a similar game with the digital cameras - firstly the image is limited by colour (24bpp), then by pixels (megapix), then by format (jpeg). Somewhere I read that 35mm film was equivalent to 12 megapixels, maybe more.. So to replace a 35mm cam we should be using 32bpp, 12megapixel cameras, with RAW format? This means big picture files. The more bits the better, but the larger the data requirement, and more bandwidth required (HDMI v1.3) etc.
 16 August 2006, 23:14 #20 Tony Landais Zone Friend   Join Date: Mar 2003 Location: uk Posts: 426 Encoding a film is a real art... but most of the time (old movies or budget release) they do it quick and cheap with basically one encoding setup for the whole movie. On top of that some DVD players decode and filter better than others. Hopefully the futur is bright and HD-DVD is able to support HDTV 1920x1080 10 bits format and fix all that... thank you Microsoft for the codec

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