Recently I collected all measurements that I could find for a number of lights:
In some cases there are Vinh’s numbers.
In 1 case the number is indeed an outlier, in others its not.
GT Mini: Vn 170 kcd, others average 128.5 kcd
Cat V6: Vn 175 kcd, others average 178 kcd
T27: Vn 335 kcd, 1 other 340 kcd
Do you think it would be sensible to mix SST-20 3000K 95CRI and SST-20 4000K 95CRI on the D4S to gain a beam profile with 3.500K color temperature? Would this even work as the 3000K version is probably subject to become warmer and less efficient in conjunction with the 4000K SST-20 at full brightness level? (...thinkin' about Vf, thermal specs, maximum current, etc.).
Whew to my eyes that is one green beam; doesn’t matter if it throws a mile, no ty.
On a good note I ordered a 3000k SST20. Super excited about that. I.already have 2 D4S, a Nichia and XPL-HI 5000k. I hope the SST20 is as nice as djozz found with his testing! Should be amazing in this quad! Thanks again Hank!
@Lux Perpetual, since the VF usually changes significantly when going with different emitters or higher CRI emitters, going with 2x 3000K and 2x 4000K SST-20s will be about perfect in terms of tint mixing compatibility.
Of course there are exceptions. Such as combining a red, green and blue will naturally result in a much higher CRI than any of them separately. But mixing is usually done with emitters having similar characteristics in the SPD (i.e. they have their peaks and valleys at the same wavelengths, just in different amounts).
I also suggested a while back that Hank should consider offering LH351D sometimes, and should offer a 2x4000K plus 2x5000K option to get a tint-mixed 4500K. This should provide a CCT closer to what is most popular, and should also help make the tint a little less green.
I really hope Emisar will release a 21700 version of D4s.
The only reason I’m not buying current D4s is it’s too big for pockets. I just received my Fireflies 21700 and it’s perfectly pocketable, even fine as headlamp.
I wonder if 21700s are the future judging from the variety that have surfaced. 30T for maximum output. 40T for a nice balance of power to capacity. 50E for capacity and more. It’s slimmer and nearly the same capacity as a 26650 too. We seem to be benefiting form vaping and their need for high drain cells.
In terms of flashlight size, Imo a 26650 light just feels good in the hand. Not too narrow, but not difficult to get your hand around. Its a good general purpose, long runtime size.
In terms of pocket carry though, the biggest ill carry is an S2+
Id rather have to change batteries than deal with constant unnecessary bulk, but thats just me.
Now if there was just a 21700 tube/tailcap option, id pick that up in a heartbeat.
well why not just buy it the regular d4 then ? only thing 21700 would provide is more runtimes perhaps vs 18650… but those cells arent that popular in lights yet…
I’m interested to see what the 3000k SST-20 is like in this light. I like warm tints, so I ordered one with the 4000k XP-L HI because that was the warmest tint you could get in it at the time. I wonder how these would work in it as well: Link I would order another if these were offered in it. Warm tint, high CRI, and also should be ~4000 lumens like the other XP-L HI options.
I just received the Emisar D4S XPL HD v6 version and the shape of the beam is fantastic….perfectly even transition from the center of the beam to the edges. Just like I love. I have another with the XPL HI on the way so can compare, but I can already say beating the HD beam profile will be next to impossible to my tastes.
The “S” in D4S is a capital letter. Same with the D1S.
Name
Quantity
Description
D1
single
one Emisar D1 light
D1s
plural
multiple Emisar D1 lights
D1S
single
one Emisar D1S light
D1Ses
plural
multiple Emisar D1S lights
D4
single
one Emisar D4 light
D4s
plural
multiple Emisar D4 lights
D4S
single
one Emisar D4S light
D4Ses
plural
multiple Emisar D4S lights
It can get a little confusing though, guessing whether a small “s” means plural or a different model, so for clarity it’s probably best to avoid the small “s” entirely and use other words around it to remove ambiguity.
… and if I ever have another client who wants to end their product name with a “S” suffix, I’ll try to steer them toward a less confusing naming scheme.