Comments

Spot|DSE wrote on 3/9/2005, 9:55 PM
Nocturnal F,
There are lots of websites on this, but the upshot is:
1. FLAT lighting across the green. No shadows, no hotspots. Look at your waveform monitor in Vegas or DV Rack to get a flat line. If you have DV Rack, you can do this live, moving the lights in/out of the zone to get the lighting as flat as possible.
2. Light subject separately, being sure they cast no shadows on the screen. Keep subject as far from screen as feasible.
3. Backlight/rimlight subject to get better separation from greenscreen and help eliminate spill from the screen.

You also might want to check out this article from Keith Kolbo. It's got some great budget tips for chromakey work as he does it in the educational world.
nocturnal_f wrote on 3/9/2005, 10:35 PM
flat lighting? what exactly is that? do u not cast anything on it.
Spot|DSE wrote on 3/9/2005, 10:49 PM
Flat Lighting=lighting with no hotspots, no angle, just a pure, even, wash of light across the entire screen.
Fleshpainter wrote on 3/10/2005, 1:05 AM
It's very hard to do with just one light source. I use at least 4 small units, 2 near the ground and 2 near the ceiling as far apart as the screen is wide, and about 6 - 8 feet away from the screen which is as far as the subject should be from it. I only need ~ 65 watts per light unit, floods inside of cans to keep from spilling all over.
farss wrote on 3/10/2005, 1:30 AM
Fluro lights are ideal for lighting screens and less heat.
Bob.
logiquem wrote on 3/10/2005, 5:51 AM
I second about fluo lights. Use 1 or 2 unit large on the floor and the same on the celling, about 18" to 24" from your screen. You'l get a very even lightening. Test to insure getting flicker free fluos.

I experimented many things in the past and it remains the most effective solution for me.

TomE wrote on 3/10/2005, 11:13 AM
Can you get flourescent light fixtures from a hardware store and replace with a color corrected bulb -tube ? By the way what temperature should I be getting for the tubes for good indoor greenscreen? --looking fo the home depot or Wal Mart solution not the BH photo solution. LOL


-TomE
Spot|DSE wrote on 3/10/2005, 2:10 PM
If you read Keith Kolbo's article linked above, he gives you the name and model # of the flourescents to use, based on his experiments.
Jimmy_W wrote on 3/10/2005, 3:08 PM
Which is, Sylvania Designer Cool White Plus 40w T12 lamps .
Jimmy
jeff_12_7 wrote on 3/10/2005, 5:14 PM
Basic Green Screen Lighting

Click this link... kind of general but you can see for yourself...

Jeff
logiquem wrote on 3/11/2005, 10:44 AM
I use daylight standard fluos... Why "color corrected ones"? Just make sure that they dont spill on your subject (i use cardboards for this).

I use also large, soft boxes in front of the subject to avoid hard shadows on the screen.