|What Gels to Use - Color Correction is being discussed in the ControlBooth Lighting and Electrics forum; I watched on utube that you can use gels to change lights from a daylight to indoor Kelvin rating by ...|
You need to know the color temperature of the fixtures you have, as well as what you want to achieve. Generally, if you have a tungsten incandescent source (~2800K to 3400K), you'd use a CTB filter to raise the color temperature to match daylight. If you have daylight or gaseous discharge source (~5000 to 6000K), you'd use a CTO filter to lower the color temperature. Mired shift also comes into play, as does the white balance of the camera(s).
Here are the most pertinent color filters from the "big 4" US color manufacturers:
If the stage lighting is solely for the benefit of the live audience, with no cameras involved, you can use any color filter you want that achieves the desired effect.
(Click any term with a dotted yellow underline to be taken to the wiki definition.)
W o o f e r H o u n d
Tungsten GE Bulbs.
Last edited by derekleffew; August 27th, 2012 at 11:28 AM. Reason: formstting
What exactly are you trying to achieve.
You have a 500W incandescent lamp with a color temperature between 2700K and 3200K. That's a fine light source for filming.
I'm not sure what you mean by indoor Kelvin rating, that is specific to the lamps installed in a given structure.
Daylight is between 5500K-6500K roughly.
David Vincent Aldrich
"Did you ever stop to think, and forget to start again? " ~Winnie the Pooh
"I have no special talents. I am only passionately curious." ~Albert Einstein
stage and studio fixtures has a lamp code that will allow you to find the specifications of the lamp. These are standardized by ANSI for almost all the lamps used in film/video/tv/theatre. There are still some that don't have standard ANSI codes.
Also, many fixtures only have a specific lamp or small number of lamps that are rated for use in the fixture, so if you can tell us either what fixture you are using or what the lamp is, we can be a lot more specific about what color correction you need to achieve the look you want.
Master Electrician - Pioneer Theatre Company
Soup or art?
"...allow me to explain about the theatre business.
The natural condition is one of insurmountable obstacles on the road to imminent disaster!
...Strangely enough, it all turns out well."
Love CB? Upgrade to premium today!