Quote:
Originally Posted by Pablo
Didn't know that... I can't check, anyway, as none of those devices are available in my country...
So, what's the difference between a Nook Color screen and an iPad screen?
|
Very little other than pixel density (which depends on the iPad model).
Eyestrain is strictly a personal reaction that affects everybody differently so there is no universal statement anybody can assert about it.
As a vaguely general rule, higher pixel density displays will produce eyestrain in less people and on a given display lower contrast and brightness levels will result in less people experiencing eyestrain. (Or eliminate it for some people.)
For example, some people can eliminate eyestrain on a PC laptop by changing the color scheme (say amber on black, light blue on darker blue, etc) or by reducing the overall panel brightness.
On iPads, some people that reported eyestrain on the older XGA-resolution iPad2 don't on the higher-res iPad3 and 4. Some still do and others never experienced it.
Another reason for LCD eyestrain is that the LCD backlight is strongly polarized. Some people find relief while wearing polarized glasses. None of these reasons are inherent to the tech nor do they affect everybody.
The primary reason why eink is hailed for lower eyestrain is that, as a reflective display technology it relies on ambient (non-polarized) light. Plus it has significantly lower brightness and contrast. (And it doesn't have what amounts to a flashlight aimed right at your eyes.
)
This is one area where everybody reacts differently.