yeah I am talking about the backlighting, but wonder whether it uses blue LED's with a chemical coating to give the impresion of white, or red, blue and green leds combined to give off white light.Unless I am confused the only LED is the backlighting and it's white.
Neither. White LEDs, not blue, not RGB. As far as I know, blue LED + chemical coating is nonexistent, Mac, PC or otherwise. I do remember some of the Dell XPS laptops using RGB LED backlighting. As of now, Dell's 13" XPS offers only WLED backlight (white LED) while the 16" XPS offers a BTO of RGBLED backlighting. Dell claims RGBLED backlighting is very close to 100% color gamut but I think this is blatantly false. Isn't a display's color accuracy affected by the LCD panel? Not the backlighting? Or LCD has more affect than backlighting?yeah I am talking about the backlighting, but wonder whether it uses blue LED's with a chemical coating to give the impresion of white, or red, blue and green leds combined to give off white light.
I have been googling this and can't find anything relating to the macbook pros, but there are apparently a few windows laptops that are using this tech now.
thanks for the replies.Neither. White LEDs, not blue, not RGB. As far as I know, blue LED + chemical coating is nonexistent, Mac, PC or otherwise. I do remember some of the Dell XPS laptops using RGB LED backlight claiming better color accuracy, but color accuracy is in the panel itself, not the backlight.
Wiki said:LED backlighting in color screens comes in two flavors: white LED backlights and RGB LED backlights. White LEDs are used most often in notebooks and desktop screens, and in virtually all mobile LCD screens. A white LED is actually a blue LED with yellow phosphor to give the impression of white light. The spectral curve has big gaps in the green and red parts. RGB LEDs consist of a red, a blue, and a green LED and can be controlled to produce different temperatures of white. RGB LEDs for backlighting are found in high end color proofing displays such as HP DreamColor LP2480zx monitor or selected HP 8730w notebooks, as well as newer consumer grade displays such as Dell's Studio series laptops which have an optional RGB LED display. The LED Apple Cinema Display for example uses white LEDs.
I think that the answer is both, my macbook always had a bluish white even after calibrationIsn't a display's color accuracy affected by the LCD panel? Not the backlighting? Or LCD has more affect than backlighting?
May be simply a panel specific thing. Most LCD displays sold are not calibrated anywhere near color accuracy from the factory. Even the presets tend to have a tint one way or the other so custom RGB settings are a must.Finally, it is important to me as I have just returned a unibody (white) macbook as I could not get on with the screen, and one of the issues was that it just looked too blue. When comparing the laptop in the shops to the 13" mbp, I noticed that the white level on the mbps seemed a lot easier on the eyes. I wondered whether the backlight was partially responsible.
software calibration will always be limited by the panel and backlight, and in my case, there was a definite blue hue from the backlight itself (I calibrated the screen to various different settings to no avail).If your problem is too much blue that is only because it is poorly calibrated. You can change that by software.
That is no reason to return a notebook. If you told the staff, they should have told you that.
An LED torch uses white LEDs. How do I know this? Because I built one and the color it emits is the same as the one I bought for reference. And the LED package was clearing labeled "white LED".software calibration will always be limited by the panel and backlight, and in my case, there was a definite blue hue from the backlight itself (I calibrated the screen to various different settings to no avail).
I think the point for me is that if you look at the light from an LED torch for example, the light emitted has a blueish quality. This can be seen on video from camcorders that have an led back-up light, or indeed on images taken with camera phones that use LED flashes.
This blue tint was unavoidable on the macbook I returned, but was not present in numerous mbp's that I have looked at in various stores. This, coupled with the 60% greater colour gamut that apple is quoting, makes we wonder whether the mbp's use RGB LED's rather than WLED's.
Can anyone offer any definite info?
Ignorance must be bliss, right?LED backlighting is white. End of story.