Thread: New from Apple's WWDC: iBooks
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Old 06-08-2010, 10:59 AM   #42
kjk
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Quote:
Originally Posted by WillAdams View Post
kjk, no, ppi (pixels per inch) and dpi (dots per inch) are different.

A pixel is a ``picture element'' a unit of a raster grid which can be more finely differentiated than just black or white --- the coarsest pixel I can think of would be the monochrome NeXT Cube (and later Slabs) which had black, white and two shades of grey.

Try putting a 326 ppi greyscale image of a Gustav Doré engraving on the iPhone and compare that to the actual engraving in a book --- the difference between them will be obvious to anyone w/ good vision.

William
Yes, and I think that's why its difficult to compare print resolution with screen resolution, both real and perceived. Can't wait to see the iPhone 4's screen now, though.
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