OK, I broke out my laptop, meter, fired things up and took your test. I also looked at the screen and lens before I had my laptop open; just the pitch black room prior with the projector on.
Just looking at the lens from different angles walking around looking up (ceiling mount) I can see the blue-purple you are referring to, yellow and pure white depending on angle and where I am on a walking arc. Where I see blue-purple is only part of the image; it isn't all purple, maybe half or so. I don't know if these lenses have some kind of coating on one or more of the elements.
When I look at my screen (no gain) "thinking purple" I can see what you mean; I hadn't noticed it in that way before maybe because I wasn't looking for it. It definitely isn't purple or magenta though but more of a dark gray with a hint of of magenta. Perhaps this is what you mean by smokey-purple.
When I put the meter on the screen with no patch or a 0% patch I measure a magenta-blue hue pretty deep (maybe 1/2 down) between magenta and blue but because the light level is so low I would never think magenta unless I was looking for it or, now, thinking about it differently. When I put up a 1% patch I can measure gray with a <0.22 dE but still with the same general hue (but less and closer to the bulls eye) . When I get to 2% and up I am out of the hue and back to the bulls eye with a <0.3 dE. All my dEs are < 0.6 up to 5%.
To your point about alignment, I do have a slight blue shift off the lines when I am nose to the screen but it isn't visible from the seating position. I also just re-aligned and blue was indeed much further from line center from the last time I had looked.
I didn't do the paper test but I was wearing a white shirt and I didn't see the shade of purple you show reflecting off my shirt. That looks extreme.
Hope this helps.
Originally Posted by fatherom
OK, I have a couple followup questions:
1) When people turn their projectors on, and nothing is displayed (except for the hdmi 1 logo), if you look up at your lens from about a 45 degree angle, what color light do you see? I definitely see a solid filled circle of purple light coming out. Not sure if this is due to refraction or the angle or what, but it's definitely purple.
2) Then I got to thinking about alignment. Did a VERY rough pass at Shift alignment and made the lines look better, but my center is definitely off from my sides in terms of alignment.
Could the core alignment be the cause of my purple hue? I have NOT gone into the service menu and turned off the subpixel alignment...are most people doing this as a matter of course?
Thanks all..I hope I can either get to the bottom of this. As I mentioned earlier, the four instances of this projector that I tried in the spring of 2018 all looked similar. I even found one quote online where someone was saying that Sony projectors are "known" for this smoky gray/purple black.