Originally Posted By: FurFlyin'Where do you get a red lense?
Here use a caliper and measure the flash light head.
http://www.riflemagazine.com/catalog/detail.cfm?page=1&Productid=1252&subcategoryid=77
I made this post some time ago here and on another site
it effectivly shows what red filters do to LED light.
Traditional white power LEDs don't have much of a red component at all, so a red filter on such a light will significantly reduce output. Which maybe is why the folks using LED for spotting are finding that the critters don't seem to spook. Because with a red filter on an incandescent spotlight what you are doing is removing the red from the lights output even though you see red.
Secondly the red filter reduces the light output buy near 50 percent. Oft times more on an LED based light.
These photos were taken 36 inches from a white (eggshell) wall at 1/25 of a second.
The light is what is is a Surefire clone the filter was a Surefire red filter. The light generates 120 lumen's.
First no red filter you can see a slightly bluish tint typical of an LED.
Second picture is with red filter you can see how much the filter reduces the output.
Just thought some of you folks might be interested. I'm pretty sure you don't want to filter your LED flash or spotting lights.
As an aside the light being used will easily ID my black lab at 50 yards naked eye and further using a scope.