[Optisolis/E17A/E21A] Jetbeam Jet-µ

No such thing as a 219C v2 5D. You probably wanted to write XP-L HI v2 5D? Cree 5D tint is one of the best ever. It is very similar to Nichia 219B 9080 and E21A. If you compare Cree 5D with a 219C, you will realize how green 219C is unless you get the sm4070E bin from Clemence.

I just received my Fireflies E07 SST-20 95CRI 4000k FA3 tint bin. Turned it on and thought the tint looked really good on turbo (low mode is very green). Then I turned on my D4S with 5D tint and all of a sudden the SST-20 appeared green when compared side by side.

Its a 219C 4k 90cri from Mtn i goofed on the label and mentioned in my comment

FWIW: Who can resist the temptation of absolutes and universal vision?
Our bodies are all somewhat different, doesn’t that include our eyes and eyesight?
Retinas have different ratios of cones, rods, deterioration and sensitivities. Corneas yellow with age.

Blue light scatters more in the vitreous.
Floaters block images, forcing the brain to fill in the voids.
Daylight isn’t always perfect lighting for everybody, emitters can appear much different throughout the day.

Outdoor gardening after sunset is much easier for me using a greenish emitter.
During the day copper, tinted sunglasses give me the best color contrast, similar to the traditional below the ANSI BBL Nichias.
Beautiful tint is in the eyes of the beholder.
High Cri for interior design and selling consumer goods can be significant for us flashaholics, but hardly a panacea.

Looking at the numbers on Optisolis, seems like the higher CCT you go, the slightly better the numbers. I’m almost tempted to get a 6500k one just for the novelty of it. Maybe one 6500k and one 5000k.

Weren’t the E21A and 20 degree Optisolis scheduled to go live a couple days ago?

Yup, if only the custom didn’t returned my lens back to the sender. They RE-ship back the packet two days ago. That must one hell of dizzy trips for the lens

EDIT: wrong answer…Some suggests me to wait until they’re all ready because some people want to get both Jetusolis and Jetue21a. And not all people watch this forum.

- Clemence

Waiting for beam perfection is a wait worth it. Is the bezel hard to screw off in case I did want to put like a 1/8th minus green on?

Yes, not all Jet-U I got free from glue…. :expressionless:
Some are very hard to open. Luckily it’s not real threadlocker, judging from the residue it’s more like an UHU glue. Meant to ease the installation. Don’t worry, I’ll open it up for you.

- Clemence

I am very glad these lights are going to happen!

As I see it, the higher the CCT, the closer the theoretical black body peak gets to the LED. You don’t need the phosphor to produce as much red, and you don’t need to trade off as much blue to get your other colors.

Up to about 4000K, the black body peak happens beyond the human visual range, but the phosphor peaks happen within the visual range, so their output is declining as wavelength increases in a range where the theoretical target needs increasing output as wavelength increases.

UPDATE 190120: First batch production has started

Bad news (for me). Newer Jet-U are GLUED. Fortunately, still removable although with extra hassles and chemistry lesson :neutral_face:

- Clemence

I wonder if anyone has ever tried to suppress the violet/blue peak with, say, a uv lee filter? What kind of tint/cri shift does this cause?

I dont mean to cut it off entirely, just to the point so that it does not stick from the black body spectrum

Your eyes are so insensitive to this wavelength that the height of that peak has relatively little influence on tint and CRI. And correct if I’m talking nonsense but keeping that peak a little higher may provide some compensation for the cyan dip. In any case, if it is better to lower that peak the best way is adding more phosfor so that it is converted to greens and reds instead of wasted inside a filter.

Djozz, theoretically, I agree with your every word. What I mean is that since the amount of phosfor is a given, i wonder if there is any measureable difference in tint/cri? I have these lee filters and a 3x 5000k optisolis mule, so I’ll try to see if there is any visible difference, but I also interested in measurements

What I observed was that there was an obvious difference between a 5k optisolis and 5k e21a in the blue/green range.

Ordered myself 2 5k optisolis

Just ordered a 4k Optisolis and a 4.5k E21A. Hoping that these make some great back ups.

Sorry for the empty product pages. I’ll post some images ASAP. But I’m sure most BLFers already got the information. One of the most important image is the lens arrangement for JetuE17A and JetuE21A. I will also add more optics in the JetuE21A package for you guys to play with (4 pcs in total instead 3pcs). As for Jetusolis, I will only include same spare optics since everything else don’t work with it.

- Clemence

ordered E21A 4.5k
thanks

What do I do if i want it sent to maukka?

Contact him or fill his interst list about it. I can ship yours to him. I still haven’t ship his order plus my personal calibrated Jetusolis too. You can PM me about the shipping cost arrangement.

- Clemence

I voted 4 at first and changed it for 1 :person_facepalming:
5K Optisolis and 5K E21A ordered.