Originally Posted by R Harkness
I'm very grateful for your note here. I just went through the settings and it appeared you are correct once I selected the above settings, as well as choosing "color management 1," it seemed all the settings were as indicated in my report. (Though I didn't go through all the custom gamma settings)
Thanks so much again!
TWO LAST QUESTIONS:1.
I'd like to copy my calibrated settings, under "User 1" into the "User 2" setting (so essentially I have a back up if I screw up again, and also perhaps to tweak that setting). People have talked about doing a copy of one picture setting into another user picture setting, so I'd assumed there was some simple "copy picture setting" from one picture setting to "paste" into another User setting feature. But I can't see any such option in the menu, or looking in the manual. Does this mean "copying" the image settings from User 1 to User 2 actually means manually inputting all the settings again into the new User setting?2.
Now that my system is ready to get dialed in: I do have some conformity issues I'd like to correct. Is it ok to start using the fine color grid adjustments now provided by these new JVC projectors? Or are there some issues with doing so (e.g. I seem to remember that such digital "fixes" for convergence can end up causing more harm than good).
You are very welcome Rich.
There is no copy and paste. I think the RS65/X90 has that feature. Another one of those little things that JVC have done to try and distinguish the models more. However, if you repeat all the settings you just did again in user 2, the gamma will be there, but not the gains/offsets. Gamma1/2/3 is persistent across all user presets. But for gain/offsets, each user preset has its own custom 1/2/3 version. So you would need to copy the gains and offsets over. Once again though, it shouldn't be more than about 10 minutes of effort.
As for convergence, my own experimentation showed that a change of half a pixel halves the resolution for that colour in the affected part of the screen. It is hard to determine what fractions of a pixel actually do to resolution. My advice to you, is if you see visible fringing from seated towards the edges of the screen, use the zone adjust to dial them out. I do not recommend using zone convergence at the centre. Get the centre within half a pixel using whole pixel movements only if you can, and then just dial in the edges. If you cannot see any visible fringing from seated, then just don't worry about it.
Through a lot of my own experimentation, I realise there is very very little truthful information on the net about the effects of misconvergence on resolution. It is absolutely not true, that one pixel of misconvergence = half resolution. Actually it seems to affect contrast more than resolution. For example, consider an alternating black/white zebra pattern, going white/black/white/black each alternating pixel. Now imagine a 1 pixel misconvergence in green, so effectively it is actually purple, green, purple, green. The resolution hasn't changed at all! The colour information is now wrong, although the brain does an amazing job of filtering those errors out so you probably won't see it. But more importantly, the contrast is affected because it should have been x lux on white, and 0 lux on black...but this is now compromised. Misconvergence is actually poorly misunderstood and I don't pretend to understand its effects fully either. I can tell you though that the variance in optics between projectors plays a MUCH larger part in perceived sharpness than misconvergence. Also misconvergence in blue is largely irrelevant. Always prioritise green/red.
Having said that, I would still desire a well converged projector. My X70/RS55 is not great to be honest. It is within about a pixel over the whole screen, but never any better than 0.5 a pixel anywhere. The most annoying thing is when you first switch it on, its near perfect...then it just starts deviating in a very peculiar/non-linear manner. I think it behaves better when its right-way-up as opposed to its current up-side down location.