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Aw Cliff, now don't be shy...!
It's easy for 2 identical projectors to need different care and feeding as time progresses, all based on the initial calibration and/or those that follow. If one is set up with everything hovering around its registers' midpoints, there will be next to no drift over time.
If however the other one - same identical set - was set up with all sorts of mismatching between points, those points will be constantly fighting each other, and drift is just the tip of the iceberg as to how badly it will handle rendition of pic. All this also applies to the image quality in real time, not just whether it will drift over time.
Cliff has a ceiling-level enclosure for his twin G90s, and just saying they overlap is demure of Cliff, but it is not doing nearly enough justice to the amount of work that has to go into the whole thing to get it to the level Cliff runs it at every day. As on a single projector all points and the geometry and everything else must be first dialed in like nobody's biz, which Ken is a long time expert at. First the focusing has to be dialed in superbly on all 6 guns and then balanced optically edge to center, with the electronic focus optimized as well on all 6. Then astigmatism has to be dialed in and any error neutralized, and same treatment with sheimpflug, which is the horizontal and vertical angle of each of the 6 lenses in a double stack.
Then the green has to be set up properly on the first projector, and the red and blue dialed in to superimpose properly on top of the green, pretty much everywhere on the screen, not just here or there. Paying special attention not just to the middle area, as would happen with a blend, but the entire picture, end to end, top to bottom.
Then the entire second projector's image has to be superimposed on top of the entire first projector's image, all across the screen. To a gnat's eyebrow, as you can see from the stealth grade image Ken delivered and which Cliff is used to and enjoys every day. That's his everyday double stack. Ken often calibrates a triple stack for Cliff, whenever Cliff has a 3rd G90 to use for it, and you should see THOSE screenshots! What was it, Cliff, 525,000:1 contrast ratio? I thought I was looking at an OLED display!
Believe me, Cliff is one spoiled puppy...(cop to it, Cliff...)
Then there's the grayscale, the colorations, the brightness/contrast/sharpness levels...
I am sure it took Ken all day on that picture, if not including an overnight!
Again, great job on that incredible pic! Kudos to Ken -
Mr Bob
It's easy for 2 identical projectors to need different care and feeding as time progresses, all based on the initial calibration and/or those that follow. If one is set up with everything hovering around its registers' midpoints, there will be next to no drift over time.
If however the other one - same identical set - was set up with all sorts of mismatching between points, those points will be constantly fighting each other, and drift is just the tip of the iceberg as to how badly it will handle rendition of pic. All this also applies to the image quality in real time, not just whether it will drift over time.
Cliff has a ceiling-level enclosure for his twin G90s, and just saying they overlap is demure of Cliff, but it is not doing nearly enough justice to the amount of work that has to go into the whole thing to get it to the level Cliff runs it at every day. As on a single projector all points and the geometry and everything else must be first dialed in like nobody's biz, which Ken is a long time expert at. First the focusing has to be dialed in superbly on all 6 guns and then balanced optically edge to center, with the electronic focus optimized as well on all 6. Then astigmatism has to be dialed in and any error neutralized, and same treatment with sheimpflug, which is the horizontal and vertical angle of each of the 6 lenses in a double stack.
Then the green has to be set up properly on the first projector, and the red and blue dialed in to superimpose properly on top of the green, pretty much everywhere on the screen, not just here or there. Paying special attention not just to the middle area, as would happen with a blend, but the entire picture, end to end, top to bottom.
Then the entire second projector's image has to be superimposed on top of the entire first projector's image, all across the screen. To a gnat's eyebrow, as you can see from the stealth grade image Ken delivered and which Cliff is used to and enjoys every day. That's his everyday double stack. Ken often calibrates a triple stack for Cliff, whenever Cliff has a 3rd G90 to use for it, and you should see THOSE screenshots! What was it, Cliff, 525,000:1 contrast ratio? I thought I was looking at an OLED display!
Believe me, Cliff is one spoiled puppy...(cop to it, Cliff...)
Then there's the grayscale, the colorations, the brightness/contrast/sharpness levels...
I am sure it took Ken all day on that picture, if not including an overnight!
Again, great job on that incredible pic! Kudos to Ken -
Mr Bob
). I could swear, but I thought that some other folks over in the other forums were actually thinking that it was too high. 
, That Screen shot your refering to looks almost 3D Cliff, simply Amazing..
