Originally Posted by Doug Blackburn
Re. re-calibrating a projector... the lamp changes enough that you could calibrate after as little as 200 hours and have different settings... the question is... would that much difference be visible or not. There's a rather large variation on that. No easy way to answer. All you can say is that the lamp will drift enough in 200 hours that the best calibration settings will be different... you can't say for certain whether the drift would be enough to be visible. And it's REALLY difficult to say whether the drift after 500 or 1000 hours would become visible or not... it just depends... no way to be more definitive than that.
...but would you agree that owning your own spectro and colorimeter could
be more cost effective (long-term) in this scenario given the need to do touch-ups not less than every 6 months or so?
I guess I'm trying to say if money is no object you could have a pro regularly come over to keep your lamp based display device in calibration. However, this might not be affordable or practical for those who want to keep calibration costs down. In other words, some of us here appreciate a calibrated image as much as the next person, but have a more limited budget in this area and would rather spend more money on other things (perhaps including getting a better, higher-end display).
For example, let's say I have a TV budget of $1500. I could get a $1000 TV and spend the remaining $500 on calibration services (initial calibration and periodic touch-ups) or I could spend the whole $1500 on the TV and get a higher-end model with more PQ potential and just use existing calibration equipment I already have purchased a couple of years ago.Edited by PlasmaPZ80U - 8/1/12 at 10:25am