Quote:
Originally Posted by vostro
i feel contrast ratio plays much more important role on feeling clearer than dpi.
my kobo touch (A, not B or C) looks much clearer than H2O or oasis 2 in room light because it has highest contrast ratio despite it has lowest dpi.
|
DPI has been less of an issue in most cases indeed. I have a 320x240 pix LED ebook reader, and can read ebooks fine on it.
The main issue is when you get font sizes below 10pt, they noticeably become grainier.
10-12 pt was the smallest on that 320x240 pix device to read, and I believe 7pt is about the smallest you can read on modern e-ink screens.
The larger the size, the lower the DPI is, to give similar imagery (eg: the Oasis has a 7" 300DPI screen, which would be harder to read, than a 14" screen at 150DPI.
Either screen will be able to display a minimum pt of around 7pt, but the 14" will look significantly grainier, despite it being easier to read.
DPI becomes an issue when trying to squeeze as much text in a window as possible.
For people who have good eyes, 300DPI is good, but 200DPI or below is barely able to show fluid (non-jagged) text lines.