low temperature vs high

[billw]

I have been watching my tv in the high temperature setting.
I just received the avia DVD and I am about to calibrate the TV.

I have had the TV for about 3 months.

1) Should I do a convergence adjustment first. It doesnt look bad but I get right up on the tv I can see the other colors......is this normal or do I need to adjust.

2) The Tv has low and high color temperature......does the high temperature put more "strain" on the guns? Should I use Low?
Should I put it on Low to calibrate?

I have a JVC 56" RP TV......I cant remember the model #.....

[DTC mac]

The high temp setting will push colors towords blue-white and somewhat diminish the lifespan of the guns. the ATSC/NTSC color temp standard is 6500K many people feel the picture to be to dim at that setting. Often display sets are set >9300K

[billw]

How do you check the color temperature?

[57U]

ISF technicians use a tool for measuring and adjusting the TV’s color temperature. This can be an optical comparator, a colour analyzer or a spectroradiometer.

If you want to adjust your own colour, using a setup DVD choose the "warmer" colour temperature. This is the one that looks "redder" or "less blue". You then adjust your colour with the DVD.

If you prefer the "less red" look, you can choose the other colour temperature (more blue), but you'll have to do run the setup again. The results that you achieve will not be dramatically different in the end, but they will be different.

Remember that everything is a compromise. Even if you have an ISF calibration, you'll still see that some channels are very "red" while others may be "greenish", etc. This is because different media are used for recording colour (film, video, cheap video, etc) These are never identical.

You will also notice that some directors use colour as a "mood tool". For example the movie O Brother Where Art Thou, had a sepia tone induced. Amelie had "green" induced into a number of scenes. Unbreakable - blue.

The important thing is to get the skintones of the "average newscaster" right. Then you'll be most of the way there as far as colour is concerned.

You will note that I did not address contrast, sharpness, brightness, convergence, each input adjustment, etc. All of which can be important too.

If you want to read more about setup, read the post in the FAQ section "what you need to do to your new HDTV".

[billw]

This is going to sound stupid....but is the High Color Setting the warmer setting?

[57U]

The "cooler" setting is the one that looks "more blue", while the warmer setting is the one that looks more red. Should be obvious when you switch.

[zarlor]

On that convergence question, definitely do a convergence. That will help put everything in its place and should help to improve the clarity of the picture. I find that sometimes even smaller convergence errors can make the picture seem "muddy". It's worth taking the time every now and then to get it dead on, IMHO.

[woodman]

Originally posted by billw
How do you check the color temperature?

If you don't have the necessary test equipment (which no one has except professional "calibrators"), you check color temperature with one of the "setup discs" such as Avia or Video Essentials or Sound&Vision.

You look at the gray scale pattern which shows bars of varying shades ranging from white at one end down to black at the other end. All of these bars should appear absolutely neutral in terms of having any hint of color to them ... in other words, just varying shades of gray from one end to the other. Any tendency to show color indicates something less than the ideal.

Just to confuse the issue somewhat, the numbers are backwards from what you'd reasonably expect! That is, higher color temps tend to blue - which we've always considered a "cool" color, while cooler color temps tend toward red and brown, which we've always considered as "warmer" colors. I hope this hasn't confused you but made the whole subject a bit clearer.

Oh BTW, color temp has nearly no effect whatever on brightness capability or on CRT life expectancy either.

[TheBigE]

Originally posted by woodman
Just to confuse the issue somewhat, the numbers are backwards from what you'd reasonably expect! That is, higher color temps tend to blue - which we've always considered a "cool" color, while cooler color temps tend toward red and brown, which we've always considered as "warmer" colors.

This is correct, and there is a good way to keep it straight. I also used to think of blue/white as "cooler" (as in cold).
But the proper way to think of this is in terms of the light spectrum. Think of stars or flames or hot metal. The cooler the item the more redish it's color will appear, while if it is significantly heated up it will begin to inch more toward yellow, white and blue.

just FYI...