Fireflies NOV-MU 21*Nichia E21A mule 1x21700 Flashlight --in stock

For this to work well for photography it will need some good heat sinking to maintain sustained brightness. Certainly it needs to sustain more than the LumeCube’s 650lm which is barely adequate for some use cases.

Interested in 2000K and possibly 3000K.

Interested in 2000K and 3000K

My guess is with a highly efficient 6A buck driver, and 21 emitters, this should be able to sustain over 1.5k lumens for a long time if you are holding the light (heat sinking), which should be more than adequate for indoor photography. Even my KR4 16x E21A mule is good enough for me to get enough shots for indoor space and I use it very often for work. This will should easily sustain twice the lumens.

Definitely interested

Nice design. I’d likely purchase with 3000k emitters.

Sorry , i checked the stock, it is 2700k, NOT 2000K.

I’d like to buy a 3000K or 2000K! (edit: 2700K?)

Tint mixing would be very cool as well. 2000K+6500K or 3000K+4500K look like good combinations.

Should try to get some 2000k because the E21A 2000K 9050 is very popular. It has the lowest blue wavelength of any LED emitter tested and it actually tests out to be 9080 despite the 9050 rating. It is the closest to candle light we’ve seen. Works well with Anduril flame mode.

It is good to see your comments (especially because SKV89 confirmed, that I didn’t buy the KR4 mule was a right decision). I didn’t have enough experience with mule lights, but it seems, this FireFlies design is already very good, just needs a few refinements.

I’d also add an at least moderately frosted front lens. Maybe if it is too much frosted, forward throw distance will be reduced more.

Don’t get me started on the LumeCube. The Air especially is ridiculously bad. It has PWM, CRI measures only 80 and the maximum output drops from 200 lumens to 160 lumens only after 20 hours of continuous use all the while the color temperature rises from 6800K to 7500K. It’s 5800K only when new out of the box. I consider it a disposable toy, not a fill light for photo/videography.

Could you offer this flashlight with Luminus Xnova Cube 1800K CRI90? This might be the best high CRI led under 2000K, and it is much cheaper than E21A.

https://www.mouser.com/ProductDetail/Luminus-Devices/MP-1616-1103-18-90?qs=Mv7BduZupUi06D1VYACabA%3D%3D

I like warm white. I would get one with this LED and also one with E21A 2000K.

I’d also be interested in a 1800K 90CRI Luminous Cube model.

Somebody (maybe djozz, but I may be wrong about that) tried already on BLF the following:

Nichia has also E17A emitter family, and there are phosphor converted colors mostly:
a given combination of E17A Amber and E17A red could result in a very nice ~1450K overall CCT with still adequate R9 value.

I think, that would the way to go, if lowest possible CCT is pursued.

This would mean only a partial redesign by making the emitter solder pads a bit smaller, then readjust the distance between them).

That would be an interesting tint mix. Luminus Xnova Cube 1800K CRI90 is similar size to E17A, so it might work too.

Maukka did it: [Reference] Nichia E17A/E21A (2000K - 6500K, R9050/R9080, color) CCT and tint shots - #49 by maukka

Maybe I was a bit optimistic about R9, but still, it could be nice.

But Luminus Xnova Cube 1800K is clearly better in terms of CRI (Luminus Xnova Cube 1800K 90CRI tested).

So, either E21A 2000K or Xnova Cube 1800K for the candle light fans (including me).

Most of the flames I measured were ~2000K, not 1800K, candle, match, lighter…

Plus this Xnova cube has a positive duv and lower current capabilities as well as output, I don’t see much point in it.

Maybe there is some interesting mixes to make with E17A, but not amber+red, maybe several 2000K+1*red.

Yes, for Amber + Red E17A, the term “candle light” does not apply.

But aside from that, there should be something in between of candle light and red. The term “lava light” could be it - anything in the 1300K to 1500K range. I would definitely get one, once I see one properly designed and implemented.

Interested around 2000K or 3000K

Very much interested if this can supply sustainable high output.

What would be the time to production for this?