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Color Saturation and Tint - subjective?

post #1 of 8
Thread Starter 
There is apparently a ton of material you can calibrate and I don't have the urge to learn it all. I would however like to go a little further than I have. I have an Epson 8700ub ceiling-mounted projector.

I've done the easy stuff - aspect ratio, sharpness, checked convergence, brightness, contrast, etc. When it gets beyond that, I get nervous. When it gets to Color Saturation and Tint, I don't know what to do. I have the Disney WoW disk and it just throws up a series of photographs with fruit and what-not and it tells you to adjust until they "feel" right.

Is there any other easy way to adjust Color Saturation and Tint? I like the Brightness and Contrast tests because it's not subjective - just adjust until you see this or that. For Color Saturation and Tint, it seems way too subjective. Am I missing something? Is there an easy way to do this? Maybe a test pattern with the blue filter that came with the Disney WoW disk?
post #2 of 8
On the AVS 709 disk there are patterns you can use a blue filter with.

http://www.avsforum.com/avs-vb/showthread.php?t=948496
post #3 of 8
You can adjust Color until you're blue in the face, pun intended. It adjusts Chroma Gain but not just blue. It affects all three primaries so while you are getting blue in line you might very well be taking red & green farther from their intended targets. The same thing happens with Tint on the secondaries.

If you have blue, red, and green filters you can adjust them all until you find middle ground. I think doing it by eye will yield a more satisfying picture, at least it does for me. To be done right, grayscale and CMS must be adjusted with the proper equipment. There is no getting around it.
post #4 of 8
The color filter method only works if everything is PERFECT. The filter itself has to be "perfect" and the TV has to have accurate primaries, and the Color and Tint controls in the TV have to work as expected/intended. It's fairly rare for all of these things to exist at the same time.

And if you do use the blue color filter method, the final step is ALWAYS to look at accurately encoded video material to see if the color looks right to your eye. That means not using programs like Smallville or CSI Miami or Hawaii 5-0 or some movie with color that is intentionally exaggerated in some way.

So, no, without a meter and calibration software, there's no SURE-FIRE way to be certain that Color and Tint are set correctly. The blue filter method may be a starting point, but if there's nothing obviously wrong with the current color and tint settings any settings you end up with after using the blue filter may or may not be worse than the current settings.
post #5 of 8
Quote:
Originally Posted by btownguy View Post

There is apparently a ton of material you can calibrate and I don't have the urge to learn it all. I would however like to go a little further than I have. I have an Epson 8700ub ceiling-mounted projector.

I've done the easy stuff - aspect ratio, sharpness, checked convergence, brightness, contrast, etc. When it gets beyond that, I get nervous. When it gets to Color Saturation and Tint, I don't know what to do. I have the Disney WoW disk and it just throws up a series of photographs with fruit and what-not and it tells you to adjust until they "feel" right.

Is there any other easy way to adjust Color Saturation and Tint? I like the Brightness and Contrast tests because it's not subjective - just adjust until you see this or that. For Color Saturation and Tint, it seems way too subjective. Am I missing something? Is there an easy way to do this? Maybe a test pattern with the blue filter that came with the Disney WoW disk?

You are looking at the wrong color test pattern....you need to go to "advanced" color saturation. That will provide a test pattern and instructions on how to use the blue filter.
post #6 of 8
Thread Starter 
Quote:
Originally Posted by redwolf4k View Post

You are looking at the wrong color test pattern....you need to go to "advanced" color saturation. That will provide a test pattern and instructions on how to use the blue filter.

Thank you. Yes, you are correct. I found them and did color/tint last night. To be honest, they weren't off much to begin with. Now time to enjoy some content.
post #7 of 8
You didn't understand my post if you think you now have confirmed that you have the right color and tint control settings.

As I mentioned in the post, the settings you get with the blue filter method may or may not be better than the settings that you get "by eye". For all the reasons I outlined in the post.

This is NOT a case where the blue filter method proves ANYTHING is right (or wrong).
post #8 of 8
Yes, I didn't mean to recommend the blue filter in anyway...just point him in the right direction to navigating the WoW disc.

I use the blue filter on all my sets...but they are plasmas, and I hear phosphor based displays get good results with blue filters.

A projector on the other hand...
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