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what color makes...???


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#1 seth christian

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Posted 17 December 2005 - 04:34 PM

I'm wanting to put some color filter paper over my tungston lights in the room to
actually project blue light like it would be outside.
What filter over a tungston source will combine to make blue light?

yellow???

I forget how the combos work.
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#2 Stephen Williams

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Posted 17 December 2005 - 04:41 PM

I'm wanting to put some color filter paper over my tungston lights in the room to
actually project blue light like it would be outside.
What filter over a tungston source will combine to make blue light?

yellow???

I forget how the combos work.



Hi,

Full Blue!

Stephen
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#3 John Pytlak RIP

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Posted 17 December 2005 - 04:57 PM

http://www.rosco.com...lters/index.asp

http://www.rosco.com...s/lee_equiv.asp

http://www.rosco.com...s/gam_equiv.asp

http://www.leefilters.com/home.asp
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#4 Laurent Andrieux

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Posted 17 December 2005 - 07:01 PM

It's not paper, it's a gel.

By the way, mind the full ctb will cut off 3/4 of your lamp power. If it was a 500 W for instance, it will then provide just as much light power as if it was only 125 W !
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#5 Heiko Saele

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Posted 20 December 2005 - 02:46 AM

It's not paper, it's a gel.

By the way, mind the full ctb will cut off 3/4 of your lamp power. If it was a 500 W for instance, it will then provide just as much light power as if it was only 125 W !


A 1/2 CTB or 3/4 CTB can be enough to make tungsten lights very similar to daylight and they won't take as much power from your lights.
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#6 Laurent Andrieux

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Posted 15 January 2006 - 02:25 PM

Right !

And sometimes, it's interesting not to be fully corrected... Unless you want a flat white image.

It's more interesting to mix different color casts. When you have daylight coming in a room, where some incandescent light is lit, it's great to feel that the outside light is a bit cold and the inside one is a bit warm.

Sometimes, half cto/cb is good enough !
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