Lowering color temperature

Ron,


Yes the white balance controls will do it for you.


The best way to tell as far as I am concerned is to watch a black and white movie or if you have a compnent input, pull the Cr and Cb cables out.


Does the resulting picture look Black and White? Does it look slightly blue or green, etc..


Use your white balance controls, specifically the RGB contrast controls to fix the problem.


On thing to keep in mind however, You probably have a coolish looking picture which means you'll need to lower you blue (and maybe green) to achieve better white balance. This will lower your light output and thus your overall peak contrast.


An external filter or colored screen will do the same without lowering your contrast just your light output.


-Mr. Wigggles

Hi Ron, although you would think that it would be easy, it's actually quite impossible to get colorimetry right just by using the naked eye.


If you are a real stickler for accurate video, you might want to use some instrumentation to get it right once, so you know what it is supposed to look like.


This is probably more than you wanted to know about this topic, but if you are interested, you can see the type of tool that I use to do exactly what you were asking about on a few "hidden" web pages.


The web site isn't done, but take a look at:

The White Point Target
The RGB Levels Meter


(Hint: Click on the "Locate" button to get your bearings once you are in the site...can any Javascript gurus out help me make that run immediately upon entering the page??)


Anyway, those instruments make it practically impossible to get the colorimetry wrong. If you hit the "bulls eye" on the target, and get all three of the RGB levels to 100%, you have exactly the reference illuminant (D65), no questions about it.


Most of these business projectors are set to a much bluer (and boardroom brighter) 9300 Kelvin instead of the more accurate for video 6504 Kelvin (D65).

Milori:


Use a


where time = your time

url = your url


if you want it to happen immediately set the time to 0.


This needs to be in the HEAD section of your page.


Good luck

Ron,


Bingo. You'll have a pink screen. I did one for my friend's Sanyo XP18n.


Worked real well. The Sanyo, like most UHP's, is quite blue.


Since I didn't kill the green as much as I did the blue, His screen was actually trending towards the peach side of pink.


Hope that helps.


-Mr. Wigggles