Thursday, May 14, 2009

Sony reader screen comparisons and the Kindle

The enlarged version of the photo at the left, from the article by Simon Cohen at syncblog.com, shows the significant loss in clarity and readability with the touch screen technology used for the Sony PRS-700's e-Ink screen.

  After lamenting that the Kindle isn't available in Canada yet Cohen explains the touchscreen's effect on clarity:
'...Because Sony's engineers had to layer a capacitive membrane over the E-Ink display to enable the 700's touch-screen features, they reduced the amount of ambient light the eInk receives, and thus the amount it can reflect.  The result is (when compared to the 505) like reading through a thin layer of onion skin paper.  Contrast is reduced and some crispness at the edge of letters is lost.  Worse still, this top layer is quite reflective and depending on where your light source is located, you need to tilt the 700 slightly backward to avoid the glare...'
In this comparison of the two Sony Readers, there are also caveats that will be familiar to some Kindle users when it comes to the e-Ink screens, which most reviewers find far easier on the eyes for any length of time than reading from an LCD screen (which can do color and backlighting at a cost to battery drain in addition to eye fatigue, though with better refresh rates).
'Some people might be aware of the light gray background of the screen itself – indeed this is probably the cause of my perception that the ink could stand to be a little darker.  We're all used to seeing black ink on a white page, or at least off-white and there's no escaping the fact that the light gray doesn't provide as much contrast as a piece of paper.

The good news is: you get used to it quickly and after a few chapters you barely notice it at all.'
Then he explains the black flash between page turns:
'Turning pages on the Reader produces a momentary flash of black before the ink resolves itself into the new set of words. This happens anytime the display needs to change what it's showing.  While a little disconcerting at first, you again grow accustomed to it. The transitional effect is caused by the nature of eInk displays.  The "pixels" work more like an etch-a-sketch tablet than like a typical LCD display.  With LCDs, each pixel can change on it's own, very quickly, and go from one colour to another in an instant.  eInk on the other hand exists in more of an ON or Off state.  To switch between these states, an electrical charge is needed.  Moreover, it seems that the entire area that is to be re-drawn must be first "cleaned" by turning all of the pixels on, then off.  Only then can the final image be rendered.  Odd as it is at first, I'm so used to it now that I wonder if a transitionless page turn would be an improvement.'
Cohen goes on to detail quite thoroughly the many differences between the two Sony readers. Below are ways to Share this post if you'd like others to see it.
-- The Send to Kindle button works well only on Firefox currently.

Send to Kindle


(Older posts have older Kindle model info. For latest models, see CURRENT KINDLES page. )
If interested, you can also follow my add'l blog-related news at Facebook and Twitter
Questions & feedback are welcome in the Comment areas (tho' spam is deleted). Thanks!

No comments:

Post a Comment

NOTE: TO AVOID SPAM being posted instantly, this blog uses the blogger.com "DELAY" feature.

Am often away much of the day, and postings won't show up right away. Posts done to use referrer-links may never show up.

Usually, am online enough to release comments within a day though, so the hard-to-read match-text tests for commenting won't be needed this way.

Feedback and questions are welcome. Thanks for participating.

Technical Problems?
If you're having problems leaving a Comment, Google's blogger-help asks that you clear the 'blogger.com' cookies on your browser's Tools or Options menu bar and that will fix the Comment-box problems (until they have a permanent fix).

IF that doesn't work either, then UNcheck the "keep me signed in" box -- Google-help says that should allow your comment to post (it's a workaround to a current bug).
Apologies for the problems.

TIP: There's a size limit. If longer than 3500 characters or so, in a text editor, make two posts out of it.

[Valid RSS]