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A Billion-Color Display
The Future of Things covered the introduction last month of HP's DreamColor display, with 30 bits/pixel, developed in conjunction with DreamWorks Animation. The display is aimed at the video production, animation, and graphic arts industries. HP promises blacker blacks and whiter whites — though TFoT quotes one source who notes that if they deliver this, it will be due to the back-lighting and not to the number of bits/pixel. No word on the size of the displays that will actually be delivered, or on the price.
And yet that 24bpp can't reproduce the full range of colors that can be printed on a piece of paper. And the ink on that piece of paper can't reproduce the full range of colors visible to the naked eye. Yes, there's room for a whole lot of improvement. That's not to discount the progress we've already made (24bpp is pretty impressive), but there's still a long way to go.
This guy's the limit!
I know you're jesting, but our eyes are definitely capable of appreciating 30 bits, and many megapixels as well. Our eyes don't work like cameras; we're excellent at discriminating fine differences within the area we're looking at. We might not be able to tell #cc1111 from #cd1111 in isolation, but if they're right next to each other we can see that difference and more.
(On a similar note, in the center of our visual field, we can discriminate physical positions with much greater accuracy than the receptor density would lead one to believe, because our analog receptors are capable of discerning fine differences by working with their neighboring receptors. So anybody who says "X resolution is higher than humans can see" is talking out of his ass. You can tell when they know what they're talking about when they say something like "at this resolution, most humans will only be able to perceive a 1-pixel difference 60% of the time" or something which sounds a lot more like signal theory than somebody comparing one arbitrary number to another arbitrary number.)