Just a novice posting... pros might want to move on..
I thought I might share my latest JVC RS540 Autocal V10, Gamma only calibration session.
Gamma Droop was fixed @ 250 hours and was my reason for running the Gamma Only correction.
Calibration: Natural, BT2020, Low bulb, CMD off, Manual Iris fully open.
I just acquired a pro tripod for sensor, so wanted to give calibration another try.
Delta numbers were lower (slightly) so I saved the results.
The Spyder5 Pro is mounted on a Ultimaxx 75" Professional Lightweight Tripod for Canon Nikon Sony, around $29.99 on eBay, and about 68 inches from PJ facing the lens.
You have to feed the PJ a video signal during calibration. So, I simply put up a Notepad white screen for reference. Also, remember to turn off Auto Iris and warm PJ up for at least 30 minutes. I forgot to do the warm up once and Color Temp on (Log only) was out of the red circle.
RS540 is shelf mounted with lens centered about 72” from floor.
Screen is 143” 2.37 Carada BW 1.4 at 16 foot throw, mounted 26 inches from floor.
I positioned sensor so it’s refection was about 1-2 inches below lens ring (see picture).
I use a HP Win10 PC, Ethernet hard-wired. I used a 25 foot USB extension cable to reach the sensor. I tried Wireless connection on PC and encountered issues. Calibration graphs were way off, so you shouldn’t hit Save, if graphs displayed at end of calibration are bad, such as, Gamma "Normal" line not straight and diagonal. You should watch the (RGB) values displayed on PC during calibration. They should climb gradually and not be zero or extremely out of bounds. I did a 33-step (Quality) "Normal" Gamma correction.
I’m not an expert, not anything close to Dominic Chan, but with his help I felt comfortable tackling this. Thanks again, Dominic.
Any feedback would be appreciated.