Thread: Red Flashlight
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Old 09-01-2019, 01:55 PM   #30
Pope & Young
gonehuntin68's Avatar
Join Date: Mar 2008
Location: Victoria, TX
Hunt In: Victoria county

Originally Posted by Greenheadless View Post
At what nm range in the scale are you stating they are seeing green and red. Is this is a photopic measurement or scotopic? I am curious where you cite your information from.
You want to know where I get my information from. Go light up thousands of deer and hogs and other animals with all colors of lights on many different properties and then you will understand there isn't a color out there that we can see that the animals can't at lease see something from the light. Just because a animal doesn't spook, doesn't mean it couldn't see at least something from the light coming on. In fact, there are even times when a Infrared light will spook animals, not only have I seen it, many other have seen it and that is why we sell two different IR nm lights, one is 850nm and the other is 940nm. I haven't heard of any animals spooking from a 940nm light but I have seen and heard it from the 850nm and as you might know, 850nm is way higher in the spectrum then we or any animals can see.

When you buy LED's from the manufacturer, they have data sheets that tell you the nm of the LED's and that is where I get my information on the nm of the light. Most Red LED's are in the 615nm to 630nm range and most Green LED's are in the 515nm to 530nm range. The problem with those ranges is those are the dominate range and all LED's will have bleed over into the lower and higher ranges and this could be what the animals are seeing. Until we can talk to animals, we will never know for sure what they are seeing when a red, Green or infrared light hits them.

Don't believe me that there is bleed over of all lights. Have you ever seen the red glow from the LED from a infrared light coming on. The reason we see the red glow is because it's the bleed over of it in the red wavelength. If it didn't have bleed over into a lower wavelength then we wouldn't be able to see it. Even a 940nm IR led has bleed over all the way into the red wavelength we can see. it's not near as much as the 850nm but it still has it. So if a 940nm has bleed over down to around 670nm that we can see, it's safe to say that Green at 520nm and red at 620nm would have bleed over all the way down to range animals can see.

Now with all that said and with all the animals I've lit up, Red IMO is by far the best color we can see that is least likely to spook any animal and is the color I use when hunting at night. Sure there might be a time when green wont spook them and red will but overall, you will spook less animals with red then green.

I think your a bit confused when asking "Is this is a photopic measurement or scotopic". If not, please explain to me how you can measure the nm of a light with photopic or scotopic meter. When you measure light with a Photopic or Scotopic meter, your measuring the lux not the nm wavelength. We use Photopic meters to test our lights lux. This is how we can list the distance our lights shine and it's a fact not some made up number.

Last edited by gonehuntin68; 09-01-2019 at 01:57 PM.
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