Quote:
Originally Posted by badbob001
DPI is fine for text, where fonts are scalable, and words are reflow-able and legible even at the lowest resolutions. But resolution is important for fixed-sized content, like comics / manga, where the fine lines and text don't scale that well, especially on a device with limited color/grey-scale range. And don't forget about fixed layout formats like PDFs, news papers, and magazines where the layout is part of the message.
Maybe when the resolution is so high, it will not matter, like on printers. Also, DPI calculations are not possible without knowing the resolution since we don't know if the size of the e-ink pixel-capsules are the same size on all displays or if they can make them smaller or denser.
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DPI on e-INK certainly varies from 200 dpi (ppi) on the 5" devices to about 150 dpi on some of the bigger devices. The wiki entries tries to show this value in the description and specifications. I do agree that both ppi and w x h resolution are both important values.
Dale