Originally Posted by Kris Deering
I've seen the green error. The X55 I have here had a hue shift that couldn't be undone without killing saturation. So I had to find the best compromise between the two (which ended up quite good). The X75 I have had nearly perfect colorimetry for all colors and no issues at all with green.
Yes, I fiddled around and minimized the error as best I could. ∆E is a tad high at 100% saturation but acceptable at 75%. My unit also has a huge Cyan undersaturation (the green under saturation doesn't help this obviously). One poster commented that his lowest green error was with film mode and film CP. I didn't try that particular combo but will next time I calibrate. Do you recall which mode and color profile you tried?
Also, if you want to get a fairly good calibration without as much fuss, don't mess with the basic picture controls (brightness, contrast). If you change them it messes with the rest of the settings and makes it very difficult to get right (gamma, grayscale) because of how JVC handles the math. You're better off leaving the projector in HDMI standard and leaving contrast and brightness both at 0. Obviously this clips above white, but pick your poison.
Could you elaborate on this a bit? I didn't see any gamma/grayscale issue using HDMI Enhanced (brightness -7, Contrast 13) and it calibrated beautifully with these settings.
BTW, I'm also curious if you've seen gamma fluctuate at the higher levels. It appears that 100% Y is fluctuating thus causing gamma to fluctuate. I can't see this with real content but it's sure apparent with the test gear. I'm hoping this settles down some as the lamp ages.Edited by Geof - 1/5/13 at 7:46pm