Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!spool.mu.edu!munnari.oz.au!goanna!minyos.xx.rmit.oz.au!s902255 From: s902255@minyos.xx.rmit.oz.au (Andrew Vanderstock) Newsgroups: comp.sys.amiga.misc Subject: Re: Mac can emulate amiga&has over 1,000,000 colors Message-ID: <1991Apr9.040415.27315@minyos.xx.rmit.oz.au> Date: 9 Apr 91 04:04:15 GMT References: <49174@nigel.ee.udel.edu> <1991Apr1.185501.6295@ccu.umanitoba.ca> Organization: RMIT Computer Centre, Melbourne Australia. Lines: 44 >>>HOWEVER, >>> This ignorant fellow, ruffled as he was, insisted many times that a >>>certain, top of the line, newly released mac had over 1,000,000 colors, I know of no macs that have *motherboard* 24 bit colour cards, not even the new Mac IIfx. You have to buy the extra colours for extra $$$ (and that's a lot in anyone's language!) All 256+ colour boards for the Mac which claim to have 24+ bits of colour resolution only have 24 bits of colour resolution. IE 16,000,000 (and a bit) colours to choose from. The extra bits are used for tag information or an alpha buffer. >Hello, > From what I remember from "Computer Graphics World" magazine, Mac users >can buy 32 bit graphics cards (don't ask me how many colours that is, but >it's a lot 2^32). These, obviously, cost just tons of money, and are strictly ^^^ No it isn't. See above reason. >for graphics professionals. It shouldn't be. The Video DACs are only slightly more expensive than the 6 bit ones present in many (cheap) VGA and SVGA clones. Mac accessory products are charged like a wounded bull, and have very little reason for being so expensive other than the Mac is expensive too. The only other reason that I can see for an expensive price is : cost of the video ram, for a 1024*768 image requires 768k of video ram. >> Colin Stobbe >That's 4.3 Billion colors. If you ask me it's a waste of money. Consider that >the Human eye can only percieve ~7 Million colors at the peak of health. That's >a 613 X overkill. All hype. ;) Yep. Even 16,000,000 million colours is overkill, but clearly it is better than the number of colours that VGA can display (256 out of 256,000). >-- >Erick Parsons, Sacramento erick@sactoh0.sac.ca.us <-- Right off the freeway -- >{ames att sun }!pacbell!sactoh0!pacengr!americ!erk <-- At the end of the road -- OzFuzzy (aka Andrew Vanderstock) s902255@minyos.xx.rmit.oz.au The opinions expressed here are my own and (probably) not representative of RMIT's opinion, if it had one.