Ha, well, to be honest, I was pleasantly surprised that the tint was very usable right out of the box, but of course that didn't stop me, so I did add a regular -1/8 green filter (not a Zircon), and that is just about perfect with only a very minor drop in output.
The Zircon filter sheets I have were just a bit too much correction, so I may have to change the regular filter occasionally because of fading, but that's really no big deal.
I would have preferred to place the filter inside, but the light is very well sealed against water intrusion, so I just taped it around the outside. It ain't pretty, but it sure puts out nice light : )
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And let me tell you, this little guy will fill a room with light. This is max output.
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And not only will it fill the room with light, it will do it for quite a while. Here are the numbers, which is why I like having 4 D cells. Those puppies pack a lot of power and are easy to find in a pinch.
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