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Does iMac Still Have Thousands-Color Display?
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Forum Regular
Join Date: Jul 2002
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I'm sure you all remember the lawsuit a while back about the iMacs using a thousands-color display and dithering to simulate millions of color and advertising it as millions of colors. Was poking around online, and I can't seem to find the color specs on the current crop of iMacs. Does Apple still do this, or are they using a proper 16.4-16.7 million color display?
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Posting Junkie
Join Date: Dec 2000
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Don't quote me, but I think the 24" iMacs are using a high-end H-IPS panel, whereas the 20" uses the standard cheap crap found in the dumpsters behind the display manufacturers' factories.
The easy way to tell is to walk into an Apple store and look at an iMac from a sharp vertical angle - either high above it, or squatting down on the floor and looking up. If the colors invert or become sharply brighter or darker, it's a 6-bit TN panel. If they don't, it's something else.
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Professional Poster
Join Date: Apr 2000
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To be clear: The dithering is over time, not over space - that is, the GPU will flip the pixel between the two closest modes to simulate the color inbetween. Modern GPUs do this extremely well, and it's hard to see unless you're looking at a color transition.
The 24" is indeed an S-IPS panel of high quality, and the 20" is a TN panel (you can see it in the viewing angles in the tech specs), but it can be an 8-bit TN panel. The test Charles suggests is also TN versus S-IPS, not 6-bit versus 8-bit. The best I can suggest is to google up some nice test image and view it on an iMac in a store somewhere.
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The low-end Mac Pro is the most overpriced Mac since the IIvx
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Grizzled Veteran
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But macs are at the forefront of photo and video editing... surly they dont use crappy panels!
[/sarcasm]
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MacBook Pro 2.4Ghz Penryn | 4GB | 200GB ~ 500GB Seagate Freeagent Go Mac ~ iPhone 3G 16GB
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Posting Junkie
Join Date: Dec 2000
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Originally Posted by P 
but it can be an 8-bit TN panel. The test Charles suggests is also TN versus S-IPS, not 6-bit versus 8-bit.
I've never heard of an 8-bit TN panel, unless this is a new development. AFAIK, TN panels are always 6-bit. At any rate, the non-TN panel types (MVA, PVA, IPS) are always 8-bit, so the test I proposed is one way to be sure you get an 8-bit panel (and it's nice to have good viewing angles too).
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Professional Poster
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If that's true - and I can't prove you wrong with a quick Google - then there's no need to test anything: Apple prints the viewing angles in black and white on the tech specs page, and the 20"er has viewing angles that clearly indicate that it's a TN panel.
The Macbooks do not have a viewing angle specified, which is curious.
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The low-end Mac Pro is the most overpriced Mac since the IIvx
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Posting Junkie
Join Date: Dec 2000
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That's true, but it's not bulletproof, since I've sometimes seen monitor companies play tricks with the viewing angles, doctoring them up to make it look like a TN monitor look like something else.
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24" LED Cinema Display, Mac Mini '09, 2.0GHz, 4GB DDR3, 320GB, FW 800; two 2TB My Book Studio II
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