Re: Epson LCD FP 6020UB – Calibration Notes
The most visible problem I saw after using Epson’s multi-point alignment (I forget how many points can be adjusted… more than 128 if I recall correctly) was that after aligning the entire screen to be perfect, when you displayed anything full-screen that wasn’t too dark (say from 15% or 20% white and brighter), an oval in the center of the screen had a visible green tint and the areas under and above the oval had a magenta tint. That wasn’t there before using the multi-point alignment. Full-screen single pixel black/while alternating line patterns did not seem to suffer from using the multi-point alignment (no apparent localized moire or loss of resolution), but it could certainly happen… perhaps I didn’t have to make moves large enough for it to become apparent. The green/magenta discoloration was fairly distracting and not difficult to see, yet I wouldn’t call it huge either. The problem I had with the 6020 was that the factory alignment was imperfect enough that at my normal viewing distance you could see red fringes from the alignment not being perfect fairly easy. There were also some visible blue misalignments but those were harder to see from the main seat than the red misalignments (not surprising). I didn’t think Epson’s optical system was very good either. No matter what you do, the images have a soft look to them… not de-focused as much as being softened by internal reflections in the optical system (including the lens).