Quote:
Originally Posted by DNSB
For most people, their comfortable reading distance (the Harmon distance) is 30 to 36 cm so holding their 7.8" device between 23.4 and 28.1 cm away is not going to be as comfortable.
For me, my reading glasses are such that when my eyes are relaxed (for normal vision, that would be focused at infinity), the actual focal distance is 34.3cm. Sadly, moving what I am reading to 26.75cm means that my eyes are no longer relaxed and focusing on the page takes effort.
So there is a difference and one that can lead eyestrain, headaches, etc.
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I don't know how it is for most people, but my ~ 8 inch devices distance is about 40 cm, and 10, 3 I use as piano notes among other things - 13.3 inches I use even further away.
10, 3 inches at 40 cm distance is uncomfortable for me.
6 inches I use at~ 30 cm distance.
And wherever I see people reading on electronic devices, I see - as I do - a reading distance of about twice the screen diagonal.
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.