Edit. I find that the calibration below gives me a much better picture than my previous calibration from post #60
O.k, so I've spent hours and hours trying to understand the color management system of the 1080UB, and have found some very interesting things.1) Theater Black 1 is NOT the preferred color mode for accurate colors. Natural is better. I'll explain below.
2) The color saturation of the primary and secondary colors is not consistent from 0-100% saturation. (see saturation charts below)
3) The brightness of the primary and secondary colors is not consistent from 0-100% saturation.
4) The main color control only effects some colors at 100% saturation, but all of them at 75% saturation and below.
5) Skin tone should be set to zero, and tint at -5, color at -12. Contrast and brightness will depend on equipment setup.
Anyhow, here are the new settings:Natural Color Mode.
I'm using custom gamma. I'm using a PS3 with extended RGB and superwhite turned on, like before. The Epson is set to Superwhite off, and HDMI expanded. Low lamp mode.Use the gains and offsets at your own risk. I have found that these vary a lot from projector to projector, and my settings may make your greys end up too red. It's best to check some grey windows to see if it looks correct with the settings below. Otherwise, start from zero and only adjust the red and blue gains and offsets until grey looks greyEdit
In order to get the gamma below, put the gamma sliders in the positions listed below, from left to right:
0, -6, -10, -11, -12, -13, -11, -15, 0
This new calibration has a slight drawback. 100% colors are oversaturated, but still not to the level of the factory defaults. BUT, the overall color accuracy across the rest of the color gamut is GREATLY
improved though. I'll explain.
Here is Color Saturation in Natural Mode
: See how colors have better hue?(bottom curves show hue error) This is a function of natural mode. 100% red hue is also much more accurate. Green doesn't change much from Theater Black 1 mode. The Hue of the colors tracks much better as seen in the bottom curves, as do the saturations error.(top curve) Optimally both of these curves would be zero all the way across.
Saturation Error(top set of curves) and Hue Error(bottom set of curves)
What is interesting is that the brightness of the primaries track well up to 75% saturation, and then drop in brightness at 100% saturation. They drop anywhere from 2 to 10% in brightness, but only at 100% saturation. This is a good thing, as it help negate some of the oversaturation at 100% saturation levels. Even though the picture can be oversaturated at 100% color, the rest of the gamut is spot on.
Look at these charts. The first one shows how the measured points line up with the correct locations(marked as the + signs for each color). The first chart shows pretty good alignment at the outer points on the gamut, but look at the points in the middle of the gamut!!!
This is my previous calibration from post #60. For instance, when the 75% green was being called for, the actual saturation beign displayed was around 50%! Same for cyan and yellow. No wonder things were looking washed out in some areas/scenes. Now look at the second chart after I calibrated to the 75% saturation windows. Voila!!! Awesome. Most of the gamut is spot on, except for the outer 100% points. The overall accuracy of the second chart is much better
Adjusted to 100% saturation
windows: (100% luminance)
Adjusted using 75% saturation
windows: (100% luminance)
When you use my settings from post #60, the 100% colors are great, but I had a problem. Colors everywhere else in the gamut looked washed out and grey. You can see why in the next picture below. This is Color saturation in Theater Black 1
mode from the calibrations I showed in post #60. As you can see, the 100% color gamut is great, but the 25%, 50%, and 75% saturations are very
under saturated. The picture below the gamut shows the saturation of each color versus where it is supposed to be. Ideally, both sets of curves would be zero. As you can see, at 100% saturation, everything is decent, but lower saturations are VERY under saturated. The bottom curve in each picture tracks the error in Hue of each color as the saturation increases. As you can see, it varies quite a bit. Not so good.
Gamut from post #60
Saturation and Hue from post #61By the way, I checked all the other modes as well, and Natural is by far the most accurate.
So, these new settings give a picture that can sometimes be oversaturated, but much, much more pleasing to me. I prefer it better than the calibration in post #60. Try both and save each to a memory setting on the Epson and you can see which you like. If you read this entire post, you must be tired, and probably deserve a beer.