Originally Posted by Archibald1
As has already been said, don't even bother trying to adjust before everything has warmed up properly. 45mins to an hour is usually a good amount of time.
Once that is done, after switching on fresh again the next time, the settings you made when warmed up previously, should all come back into line after a similar time period.
This only shows how flawed ALL three panel projectors are to be honest. My VW675 never took a full hour to stablize, in fact 15-20 minutes was more than sufficient to normalize temperatures, after that period I really could not quantify, visually by eye , any further correction. My VW885 was also much more stable from the get go , in fact it was hard to realize improvement compared to the VW675. What I mean is , with the VW675, I could visibly see the improvement in sharpness after 15 minutes, with the VW885 I really didn't notice any warmup benefit. WIth the VW675 I would always prewarm the projector to bring the lamp up to full , allow panels to normalize for best convergence . With the VW885 the light source was ready immediately and convergence was stable enough that a warm-up never really necessary except for calibration purposes, then I would warm it for an hour.
At 4K ,especially whith 8K moving forward, three panels will be the Achilles heal for sharpness, and why in fact a single chip DLP will always be sharper and naturally have better motion.
Dedicated Theater: Sony VPL VW 885ES , Panamorph DCR & ISCO III L Anamorphic Lens, Draper TecVision XT1800X Screen, 2.40:1 134" diagonal curved , Denon AVR-X8500 , 9.2.6 Atmos, Panasonic UB900, Oppo 203, Lumagen Pro 4440 , (3) Paradigm CI Elite E7-L+C+R fronts, , (2) CI Pro P80-IW Rear, (2) Paradigm SA-ADP In-wall Surround, (6) SIG-1.5R-30 v.3 In-Ceiling, Subwoofers: (2) SVS SB-16 Ultra , SVS PC13-Ultra .