John Carey:

I can’t help but dwell heavily on impending high resolution displays that could be entering the market. After reading an article containing some basic projections on the future of high density displays in mac products I cringed to imagine that my 5D images would not be a high enough resolution to fill the screen on an iMac with a retina display. In fact, the 27″ model could potentially use an only slightly smaller resolution than a full raw file from a 5D Mark III. That is pretty insane to imagine.

He has some great thoughts on Retina display resolutions, the possible advancing of the Megapixel Myth, and other implications of switching to high-density displays that perhaps you haven’t considered yet.

So much talk is focused on how awesome the technology is (and it is), but there are some interesting practicality concerns, especially if next year sees the release of 27″-ish high-density displays.

Personally, I think the biggest gains are in UI and text applications, and that it’s going to be hard for images to catch up, much as watching SD television on HD sets early in the life of HDTV was really awful.

So, if a normal human eye can discriminate two points separated by 1 arcminute/cycle at a distance of a foot, we should be able to discriminate two points 89 micrometers apart which would work out to about 287 pixels per inch.  Since the iPhone 4G display is comfortably higher than that measure at 326 pixels per inch, I’d find Apple’s claims stand up to what the human eye can perceive.

Great article about the pixel size and density of the new iPhone 4G, with some pleasantly nerdy microscope photography and technical explanation.

(via Apple Retina Display – Jonesblog.)