Originally Posted by jedimastergrant
Taking possession of my NX7 later today. Coming from an RS520 in a Bat cave at 16’ throw onto a 110” wide 2.35 unity gain screen.
It will be calibrated by High Impact AV in several weeks but can I get some suggestions for starting settings for the iris and whatever other settings are useful? Maybe minus 5-7 for SDR and open for HDR?
I am worried about DI artifacts of course with all this talk about it. I don’t want to scrutinize an image to find a problem I will never see in real time viewing but I do feel I should check to see if it is working even with artifacts like the aforementioned yellowing of whites. I am sensitive to the pumping artifacts in my current projector and leave the DI off for that reason. So I guess I will try it first with the DI on and cross my fingers.
Besides checking for convergence with the test pattern is there anything else I should do right away just to make sure that I have a good example and don’t need to contact jvc for an exchange?
First congrats on the new toy!
Let the projector warm up for a good 20-30 minutes before checking convergence and correcting it if necessary. To date most of us have seen good convergence and lens uniformity, so hopefully yours will be great here too.
I use the following:
Color - 6500K
Gamma - 2.4 (some use 2.3 which I tried and went back to 2.4)
Wide AR - auto 1 / aperture -6
Narrow AR - auto 1 / aperture -9
Color - BT2020
Brightness -3 (this can vary,decrease until you see crush)
Gamma - HDR PQ - Mapping level 3 (this varies by screen, yours is smaller so probably 1)
Wide AR - auto 1 / aperture -3
Narrow AR - auto 1 / aperture -5
Use the Zoom option in the installation mode (lens memory) to use the full panel 17:9 for aspect ratios wider than 1.85:1 (so for me 2.00:1, 2.20:1 and 2.35:1). This is a 10% or more bump in light for scope films with no scaling artifacts seen. Use Native for aspect ratios 1.85:1 or narrower to avoid cropping material.
I use the iris to equalize brightness for wide and narrow AR material for both SDR and HDR. I know the rule of thumb is wide open for HDR, but I like to keep a little in reserve as the bulb ages and I like the brightness to be more or less consistent when watching different aspect ratios. I can open it up a step after a few hundred hours to get back to what I'm accustomed to.
I'd definitely use the DI and see if you have any issues with it. As I said earlier I've had some local AVS members here for movies and all of them know it's a potential issue, but no one spotted it.