Quote:
Originally Posted by ottischwenk
And wherever I see people reading on electronic devices, I see - as I do - a reading distance of about twice the screen diagonal.
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A rather different observation from what I see. Whether the person is reading on a 6" ereader, a 12.9" tablet or a broadsheet sized newspaper, in my experience, they tend to hold it at close to the same distance where they find it comfortable to read. I have never seen someone holding a 6" ereader at 30 cm. a 12.9" tablet at 66cm and a broadsheet newspaper at 192 cm.
Quote:
Originally Posted by ottischwenk
And about your eyes: a distance setting to infinity does not fit the viewing distance of 34.3 cm from 2 different directions (distance of the two eyes) - some factor is strained excessively.
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Since my eyes are are close to the same plane and I hold the ereader pretty much centred between my eyes, the difference in the distance between either eye and the surface of the device is pretty minuscule.
As for infinity? The prescription for my reading glasses was set so that with the ciliary muscles relaxed, my eyes are focused at 34.3 cm. You did bother to notice the brackets around the "for normal vision, that would be focused at infinity" with regards to the "my eyes are relaxed"? Are you having trouble reading your Google translations?
You do know that if, for example, you have your camera focused on infinity and you then place a +1.5 dioptre lenses in front of the camera lens, it would now be focused at .66 metres.