Originally Posted by HAL-9000 I knew when I posted originally somebody would read what I posted, then assume I was confused because they didn't read it right - then get smarmy.There is no 'black light' on additive colorspaces indeed. But that's my original point, 'black' in an RGB colorspace is nothing at all, i.e. zero.But LCD's are always 'on,' aren't they? Backlight is always going, they are never at zero when turned on. In other words, an LCD's version of 'black' emits light (look at your iPhone displaying an RGB = 0 image in the dark, is it black?) and is a fundamental weakness of any backlit display technology.
What's more, since you start with a max color temp established by your display's backlight, any color you render through an LCD is subtracted from that absolute color - just like printing on a white sheet of paper. OLED's - just like plasmas and CRT's - add colors from a true zero. An OLED's absolute black is dark as the display when the device is turned off (try same experiment with RGB = 0 image on Samscum SIII Galaxy in the dark, you will find true black).
I'll learn 'what the hell I'm talking about' when you learn how to comprehend what you read beyond the grammar. Try reading my original post again.
Of course the gist of your point is all pro OLED. If you read my post, I was not arguing against it. Maybe you should check dictionary on the word grammar.
From your 'original' quote:
But intrinsically, LCD's are a mish-mash of colorspaces - they take an RGB signal (adding up from black to white) and physically render it CMYK (subract from an absolute whitespace - the backlight - to the color desired, like an inket printing on paper).
You are the one using wrong terms. I already explained what was wrong but of course you ignore it and say your point is all correct.CMYK
is process printing colours -C
ellow and black
hence my explanation before, there is no 'K' in additive colour or even subtractive colour. It is a printing term
Secondly, your analogy to printing on paper is incorrect.
Printing, either as basic process or over printing, absorbs light and bounces at different wavelengths depending on what is absorbed. Obviously 100% = black.
(As a side note: a lot of the time 100K alone will not create a deep black so 40% cyan is typically used to make it richer without causing tearing to paper)
Anyway, LCDs use various backlights like CCFL, WLED and another called RGB-LED which does away with the extra layer of colour films. Either way, the resultant image is created using additive colour.
So LCD does not:
- mishmash colour spaces
- render RGB from CMYK
- do the same as printing