Uses for colors filters?

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gcbryan
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Uses for colors filters?

Has anyone ever played around with colored filters over the lens of your flashlight?

What might some possible uses be? I know red can preserve your night vision. I think green and blue are sometimes used as well by hunters and others. Maybe animals don't see green or blue as well?

I've heard of artists "painting" on film using time exposure using colored lights.

Any other uses that come to mind? I have some colored filters coming and just thought I'd toss this question up for any ideas/thoughts.

Budgeteer
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With some you can correct the percieved color. Adding more warmth on a cold light. It does not work much but sometimes you can be fooled a little by filters.

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

watkins
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Budgeteer wrote:

With some you can correct the percieved color. Adding more warmth on a cold light. It does not work much but sometimes you can be fooled a little by filters.

 

Actually you can completely change the colour temp using the correct filter, before easy access to editing this was done in photography.

you can add a filter over the speedlight (flash gun) and then the resulting colour temp will be changed, in flashlights I’d imagine it to work exactly the same so a neutral light could be achieved using them.

They are called lee filters, examples include...

Full CTO. (Tungsten) converts 5600k to 3200k

1/2 CTO.   (Tungsten) converts 5600k to 3900k

1/4 CTO.   (Tungsten) converts 5600k to 4500k

1/8 CTO.   (Tungsten) converts 5600k to 5100k

Full CTB.   (Daylight) Raises Colour temp of Tungsten 3200k to 5600k

1/2 CTB.     (Daylight) Raises Colour temp of Tungsten 3200k to 4100k

1/4 CTB.     (Daylight) Raises Colour temp of Tungsten 3200k to 3600k

1/8 CTB.     (Daylight) Raises Colour temp of Tungsten 3200k to 3400k

 

Budgeteer
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According to this it is possible to make neutral white light by filtering out out a cold T6 XM-L without losing much output compared top a genuine neutral emitter?

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

watkins
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no, you'd certainly loose output, and it'd be somewhat defused...but yes the colour temp can be made to be just as good as an emitter made for the purpose....and the ill affects wouldn't be huge compared to having a poor emitter in the first place.

gcbryan
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I ordered the Lee Filters sample pack and it has 50 or more sample filters (including diffusers). It also including transmission % figures for each filter so you can decide what trade-offs you are willing to make.

People who don't like using a particular light because it's too blue or green or whatever definitely need to try these filters. The sample pack is only a couple of dollars.