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Old 11-23-2009, 07:53 PM   #114
EatingPie
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Posts: 888
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Join Date: Mar 2007
Device: Sony PRS-500 (RIP); PRS-600 (Good Riddance); PRS-505; PRS-650; PRS-350
Quote:
Originally Posted by kennyc View Post
Quote:
Originally Posted by radius View Post
It doesn't cause me eye strain per se, but I find that fully justified text on such a low resolution display as the Sony's is unattractive.

The reason for this is since the pixel count of the display is low, small text doesn't look good to me so I'm forced to use larger text. With the larger text, there are fewer words per line so there is less opportunity for justification algorithms to adjust spacing in an attractive way.

Also, it looks to me like the Sony LRF renderer either doesn't adjust inter-letter/intra-word at all or has very tight constraints when doing so, making it even more difficult to space the words attractively.
Exactly the issue with current e-readers. That's why I hate fully justified text. It actually causes eye strain because of the inconsistent spacing due to the discrete pixel size and resolution.
I read at "M"edium on the Sony, and have no issues at all with eye strain using LRFs. And I have cataracts in one eye.

I am also quite skeptical of the "discrete pixel size/resolution" statement. Books have a chosen font size, and it does not vary throughout the book (for normal text). The exact same algorithm for justifying a paper book can be used for electronic books.

However, most to the point, I don't see any studies blaming spacing as a contributing factor to eye strain. The Mayo Clinic actually lists the following as the primary causes of eye strain:

* Extended use of a computer or video monitor
* Reading for extended periods
* Exposure to bright light or glare
* Straining to see in very dim light

While increased font size can reduce straining, I have found no corroborating documentation that spacing or justification style causes eyestrain.

-Pie
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