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Old 11-30-2011, 05:53 AM   #106
ProDigit
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Quote:
Originally Posted by elcreative View Post
And LCD "diffuse" light is NOT the same as diffuse reflective light...
It is indeed not, however it is VERY similar!
Reflected light had to pass the pixels, before being reflected back to the user. In essence it's passing the LCD Substrate twice.
With a backlit LCD screen light only passes the LCD substrate (or pixel) once.

A dark pixel passing 20% of light, on an LCD screen with backlight might seem like a dark grey pixel (with 20% light).
On a reflected surface, 20% of the light hits the reflection surface (minus diffused light from surrounding pixels). Of that 20%, only 20% will pass the black pixel again. So theoretically, 5% of light would hit the eye, thus black pixels on reflective screens look blacker, and white pixels on LCD's look whiter.

This makes that on a backlit LCD it is theoretically possible to reach brighter whites, and the overall image would be lighter.

For some reason, when reducing LCD backlight, black pixels will appear more grey, as backlight diffuses and black pixels will emanate a higher light ratio than their white pixels on lower nits comparing to higher nits.
Increase the brightness and contrast ratio, and you will perceive darker blacks (the one you desire for black text), but also too bright whites.

Very complex stuff....

Last edited by ProDigit; 11-30-2011 at 05:56 AM.
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