Quote:
Originally Posted by mfish123 
I posted in the calibration section and got some responses- http://www.avsforum.com/avs-vb/showt...1#post21965131
Check out the link in the 2nd post for a great tutorial. Basically the jist of it is to calibrate CMS based on 75% saturation (NOT 75% brightness windows) These are on AVS 709 in the saturations section (bottom right of HCFR windows section). Although I'm a little over saturated at 100% saturation, the curve is way flater from 0 - 75% saturation. Its a good compromise and subjectively it looks better. Less greenish with a warmer feel and a little more punch in the colors. Flesh tones look ultra realistic now!
And yes we can set the 100% white Y value higher than 100 and then just adjust the rest of the colors off the recommended % of 100% white Y.
What I was missing was I had all my xy coordinates dead on using CMS but the Y value (brightness of each color was off). In other words you can have the correct ratio of colors but not enough total brightness. E.g. If your red was at 20, 15, 10 that might be the right mix to get xy accurate but if the Y value is too low you might have to bump everything up 25, 20, 15 (same ratios, but more light out put) to get the Y value correct.
In HCFR you can run saturations ---> All colors to see where you stand and then tweak from there. You'll see results on the CIE triangle, saturation - shift graph and saturation - luminance graph. Saturation-luminance was a little tricky. I could be wrong but it almost seems like for Red, blue, and cyan (at the bottom, increasing Y value makes them go up and decreasing Y makes them go down. However, and I could be wrong, for Green, cyan, and yellow, increasing Y value makes them go down and decreasing Y makes them go up. I could be wrong but I think that's how it behaves.
I'm still learning so if anyone who knows more than me can verify my interpretations I'd find that helpful
P.S. The saturation - luminance attached was on my second run. I did it a 3rd time and by increasing output on RGB for green, it raised my Y value but decreased the saturation-luminance - you'll see on that attachment that its way too high. I'll post my recalibrated one this evening when I get home from work.
I posted in the calibration section and got some responses- http://www.avsforum.com/avs-vb/showt...1#post21965131
Check out the link in the 2nd post for a great tutorial. Basically the jist of it is to calibrate CMS based on 75% saturation (NOT 75% brightness windows) These are on AVS 709 in the saturations section (bottom right of HCFR windows section). Although I'm a little over saturated at 100% saturation, the curve is way flater from 0 - 75% saturation. Its a good compromise and subjectively it looks better. Less greenish with a warmer feel and a little more punch in the colors. Flesh tones look ultra realistic now!
And yes we can set the 100% white Y value higher than 100 and then just adjust the rest of the colors off the recommended % of 100% white Y.
What I was missing was I had all my xy coordinates dead on using CMS but the Y value (brightness of each color was off). In other words you can have the correct ratio of colors but not enough total brightness. E.g. If your red was at 20, 15, 10 that might be the right mix to get xy accurate but if the Y value is too low you might have to bump everything up 25, 20, 15 (same ratios, but more light out put) to get the Y value correct.
In HCFR you can run saturations ---> All colors to see where you stand and then tweak from there. You'll see results on the CIE triangle, saturation - shift graph and saturation - luminance graph. Saturation-luminance was a little tricky. I could be wrong but it almost seems like for Red, blue, and cyan (at the bottom, increasing Y value makes them go up and decreasing Y makes them go down. However, and I could be wrong, for Green, cyan, and yellow, increasing Y value makes them go down and decreasing Y makes them go up. I could be wrong but I think that's how it behaves.
I'm still learning so if anyone who knows more than me can verify my interpretations I'd find that helpful
P.S. The saturation - luminance attached was on my second run. I did it a 3rd time and by increasing output on RGB for green, it raised my Y value but decreased the saturation-luminance - you'll see on that attachment that its way too high. I'll post my recalibrated one this evening when I get home from work.
You set should easily make 40 ft lamberts and more without any issue. You might have to choose to have the lamp on bright. Also the use of the Eye One LT is a pretty iffy meter out of the box to judge anything with.
I have the new D3 Pro with a rear projection DLP table. This table is based on a 5 nm reference spectro. Any colorimeter without a table or profile for the technology is not going to produce the results you are looking for. If you rent a spectro from SpectraCal you can train/profile your LT to be accurate on your Mits Rear Projector. Also the entry level X-Write colorimeters are notorius for just being off out of the box. The filters deteriorate quickly even if stored properly. They are much more useful if they are trained by creating a table with a spectrometer on the specific display. For the most part without a spectrometer to calibrate them with on the specific display they are often darn near worthless.
I don't find it necessary to use 75% saturation patterns on 92840. I do it the standard way with 75% stimulus 100% saturation window patterns. That is what is available on my DUO and is also available on the AVS disk. I am using a 92840 and an external video processor. I looked at 75% saturation patterns and did not see the same linear results as you did.
