It does have a light green tint to it in moon mode, that gets whiter the brighter it gets. And I cant say with complete confidence that all the green is gone at full power, but its real close.
It sure throws better than the XPL-HI 5000k, perhaps adding close to a hundred yards in throw.
And it has better definition than the HI, to me. I am able to see texture on trees and stuff that I can not with the HI. Could the greenish tint help?
After all is said and done, the SST-20 is my new fav out of the Nichia, the S4 3D and the XPL-HI.
Of course I may prefer the S4 3D 4885k in thick timber, which I have not had a chance to try out yet. I hate light reflecting back into my eyes, it blinds me somewhat and is a distraction. With the reddish tint, I notice very little reflection.
So I have a question: I just received my d4s (black, D4S SST20/5,000K, red aux) and in comparison to my 2 d4 flashlights the LEDs do not line up real well under the TIRs…. it makes for an oblong beam on one end…… Is this normal for this config? Am I being too picky?
I’ve actually received lights that Custom’s apparently disassembled and didn’t put back together right. The worst was a Mateminco X6s triple, they let the triple optic shift completely off the emitters and the bezel wasn’t on properly of course. Crazy stuff happens out there!
I got my d4s sst20 5000k today and its great. The highest 3x 7135 mode is very nice.
One thing I noticed. from moon to highest 3x 7135 the light has a very nice yellow/very slight green tint. When ramped above the regulated current the tint really gets whiter. Can it be that the pwm got anything to do with it. Its a pretty big difference and its perfect for me. Like high cri on the low and low on the high mode.
This is generally most noticeable on a FET+N light with a relatively low “N” and a relatively high FET level. I try to reduce the effect by blending channels, but there’s only so much it can do. Without the blending though, if I set the FET channel to exactly the same lumen level as the +1 channel, and alternate between the two, it causes the color to change while the brightness stays the same:
The light on the left is just there for reference. On the right is a BLF-A6 which changes tint every half second by changing which power channel is active… yellow, blue, yellow, blue, yellow, blue.
Maukka has also measured this effect in great detail, in most of his reviews. Look for his charts showing where the tint is at different output levels.