Originally Posted by JonStatt
First of all, like Geoff and I both pointed out, yellow is an absence of blue, so if blue was off half a pixel, you would see a blue fringe above a white line and yellow below it. This is expected. As also said, red/green convergence is the important one....blue really has little effect on perceived sharpness and is normally not visible from seated unless extremely severe. I don't want people to scare you into thinking you may have a faulty unit. I have seen so many of the JVCs with the current chassis, and most are within 0.5 pixels in the centre and about 1 at the edges. If you get lucky, perhaps like Kevin seems to have done, then its a lottery and count yourself very lucky. If not, it doesn't mean its faulty. 1 pixel error between red and green would annoy me though, but for blue, it would be acceptable.
On the 3D side, the colours are pretty good in the recent models. Last year there was a 3D button which had 3D cinema, 3D video and 3D animation. This year, for whatever reason JVC have hidden the 3D presets under the regular 2D presets. So under the cinema preset, is the 3D Cinema option. They have also added 2 more 3D presets such as 3D photo.
What preset were you using when you validated 3D performance? I found 3D cinema to be very good on the X75, but who knows if they have changed it around this year. Naturally animation exaggerates colour so be careful with that one. You will get horrible colours if you choose a preset that has no 3D switchover. Also try THX 3D for the most neutral colour balance.
I looked at convergence again, after 1 hour warm up, using the full pixel adjust pattern. Red seems fine. Blue seems off by probably 1/2 a pixel, as you describe, leaving some blue fringing above the white line and a bit of yellow fringing within the white line. This varies along the screen, with the lower 3rd/right 1/2 of my screen actually looking much better for convergence than the central portion. Since blue seems to be off by about 1/2 a pixel it's 6 of one, half dozen of another in adjusting it.
Left as it is, the central portion of the screen shows a bit more yellow fringing (up close). Adjusting blue one pixel down doesn't eliminate yellow fringing but reduces it in the center of the screen, but it also introduces much more obvious misconvergence (blue and yellow fringing) in the lower /13 of the screen. I suppose this is where the zone adjust is supposed to come in handy, in theory.
Looking at full field white screens, the yellowish coloration I've spoken about seems very subtle, sometime it's like I can definitely notice a central area of slight yellow dinginees, other times I'm not sure at all. Playing with the convergene, e.g. off-setting either blue or red by 1 or even 2 full pixels, doesn't seem to alter the look of the white field screen much, so if I am indeed seeing this yellow coloration (and I'm starting to doubt my eyes) I'm not sure convergence is the culperit. (It just
seems like it would make sense, since I can see yellow fringing on menu letters etc close to the screen).
Anyway, ultimately I guess the convergence isn't too bad.
Regarding 3D color: I put on a 3D movie (Jurassic Park 3D) and tried selecting different settings - for instance there were two color profiles available, one being 3D and I forget the name of the other one. But both had awful color - super red and generally just cartoon-looking. I then went through all the options in the picture settings - Natural through THX, cinema, etc - and none looked any good to me (THX coming closest to reducing the cartoonish colors, but much more dim) and pretty much all looked quite inaccurate compared to non-3D settings. So I hope it's not too difficult to calibrate for decent 3D. I wouldn't want to put up with such garish color performance to experience 3D.