Originally Posted by (Cinema-Scope)
I'm using Rec 709 patterns from the HD basics disc. It contains IRE patterns 0 - 100.
Sony UHD UBP-UX80.
Sony has some pretty basic settings, so I can't adjust any gamma from there.
On the Epson 5040UB I have Cinema Bright mode. High power, auto iris is off. brightness 52, contrast 48
gamma is -2, color temp is 5 (6500K)
Screen is curved, color is silver, and it has very small pores. Unsure of the brand. 88" tall, 206" wide.
Projector is placed roughly 28ft away from the screen.
I'm using a xrite colormunki display meter.
Is there a reason that you are using Cinema Bright? Generally "Natural" is a very easy mode to calibrate and it looks great.
I would say that you probably are getting the proper results given your setup. Depending on the room (wall and ceiling colors, ambient light, etc.) and the screen material you can easily get results such as this.
I recommend working through the manual gamma adjustment (adjust via graph). There is no straightforward procedure for this but I can at least tell you how I do it:
1. Calibrate 2-point greyscale using 11-point measurement and CIE2000 de w/gamma
2. Enable live measurement (the green arrow) and click the column corresponding to the 90% measurement values. Then manually choose the corresponding pattern on the AVS disc. You will need to adjust the gamma slider furthest to the right until your Y matches the target Y.
3. Repeat this for each greyscale level while moving left on the gamma slider graph. You will notice that some levels are affected by multiple gamma sliders on the 5040. You will just have to play with it until it is close.
4. After getting your gamma close you should re-do the 2-point greyscale (it should still be very close - at least this is what I have seen on my 6040).
5. Calibrate CMS, if necessary
Calibrating gamma using the graph sliders is a bit tricky at first but you will get it eventually. You should be able to get a nearly flat gamma (I can do it in my imperfect environment at 2.35 - just where I want it).
Remember these tips:
1. Graph sliders move the Y up and down for IRE levels increasing from left to right.
2. They do not correlate perfectly with 10% levels, and the x-axis is not linear (the sliders furthest right affect many levels, the sliders on the left affect less levels - they have more granularity). This gives you more control at the lower end of the IRE scale, which is where gamma is very important
3. Lower gamma = higher Y at a given IRE. Move the sliders down if you want the gamma to go up
4. When you go into the gamma adjust screen on the 5040 the current displayed image is frozen. Changing the pattern will not be reflected on the screen. So choose your IRE pattern before going into the gamma adjustment. This makes things awfully tedious.
5. When you first choose a slider every part of the displayed image that is within its IRE range will blink to indicate that you have found the proper slider(s). This is useful but also annoying. You must start to move a slider to stop this blinking and thus get a proper measurement.