Posted 03 September 2009 - 01:01 AM
It's really baffling, and we've swapped out the projector and the laptop for identical units, but no luck. The flicker shows up with still image plates as well as motion at any frame rate, so it's not a frame rate issue.
Camera shutter is at 180, and we're rolling at 24.
The flicker is very consistent, and not overly pronounced. It's a faint, fast flicker.
Laptop is feeding projector at 60hz.
I'm wondering if anyone has run into a situation like this, or had any issues with flicker from LCD projectors in general?
And while I'm at it ... has anyone got any tips for how to balance the projector for tungsten film? The UHP bulbs it uses run very high, like around 6500-7500, and it's a battle to get rid of that blue. We do our best to correct the plates, and then play around with orange and magenta gels over the beam, but it's always a bit of a crapshoot (though not too bad).
I'll seriously send a bottle of the finest whiskey on the planet to anyone who has any clue why this flicker problem would have suddenly appeared out of nowhere. If I had any hair left I'd be pulling it out.
Posted 03 September 2009 - 02:35 PM
Then try another camera?
Posted 03 September 2009 - 02:43 PM
Posted 03 September 2009 - 10:36 PM
Robert...power... do you have any experience with a "ghost in the machine" causing flicker? Our gaffer has run a line test on the power sources (220 for the projector and 120 for the laptop) and the power is good and steady... do you think there could be another problem in the line, like some kind of EMF or other anomalie? We're literally right next door to the main power station for the whole area so I've often wondered if that's causing some sort of weirdness... though if anything the proximity should be good not bad.