My KR4 and KR1 both came with the new tube.
Oh ok cool, I didn't realize there was just a new tube that worked for both
I’m really interested in the DT8 but am waiting for some reviews or at least some feedback from buyers. Has anyone received the DT8 and can comment on it?.
With Hank Wang’s reputation I would feel more comfortable ordering it without any info then most other brands, but still…
this is exactly how I feel about it. Also, I would really appreciate seeing a beam shots / pictures of beam profile if possible, because that is really the only determining factor of whether I buy it or not.. There's 100 pics of the head of this light on Reddit but I haven't seen a beam profile pic anywhere. ..
Not a full review but some pics and discussion on reddit: Here
I saw that one yesterday, I just wish there was a beam shot of some sort
This one has a single beamshot
I think the DT8 has the same Carclo optic as a D4v2. Only difference is there are two of them side-by-side.
At any distance further than 6 inches or so, the beam pattern should be identical to a D4v2. So if you’ve ever seen an emisar D4 or D4v2 in action, you’ve pretty much already seen the beam pattern. Only difference is the DT8 should be brighter.
Great, thanks for posting. The beamshot looks good to me, it has the normal multi emitter artifacts that won’t be noticeable when actually using the light. I was expecting something a little more unusual.
The FW3E comparison beamshot is very useful, it shows the DT8 having a smaller and better defined hotspot for a little more throw which I prefer.
I hope you’re right and those are the same Carclo optics used in the D4V2 so that there are options.
I have to decide on emitters which will take a couple of days and then I’ll order the cyan color, I wish the green color was availible, the cyan is nice but is getting a little old.
Orders from anywhere except BG take months to reach me even though I’m only 700 mi. from Hongkong so I’m learning patience. (well…kind of).
Actually they are not the same, DT8 optics should be more throwy.
It would seem not. The optics are square:
Good catch. I peered at photos and the optics did look squarish but I couldn’t tell for sure. So is this a custom optic from Carclo or are the square optics available? The beamshot looks like the optic has the characteristics of the Carclo 10621 which would be my choice but it would be nice to have options.
I like XPL-HI 5000k and 6500k but they’re an added $20 to a price that’s already expensive for me. Have to do some reading about SST20 5000k and 6500k before I decide.
from what I've read the dt8 has a carclo optic that is the equivalent of the quad carclo 10621, not the 10622 that Hank sells d4/KR4 with. And I run my d4 and KR4 with 10621 that I buy elsewhere, but I have to imagine that even though the carclo 10610 (I think is what dt8 has) is similar to the 10621 quad, it is still different than the d4 with 10621. I don't know.. I'm just going to wait on this one for some reviews from people. The throw is the most interesting part to me.
Hi Hank,
Current lenses on my recent D4V2 and KR1 increase the duv by about 0.0010~0.0012, it makes the light slightly greener, this is much better than my D4S on which the lens increases the duv by ~0.0030, still it would be great if you could source lenses with higher quality AR coating that has even less effect on the tint. As an example I have several Kaidomain AR coated lenses and they increase the duv only by 0.0002~0.0003.
The green reflecting AR lenses that Wildtrail has used in their D80 V2 even lower the duv. I have to back that up with measurements I realise, may do that…
Interesting, I suppose there are many kinds of AR coatings, my eyeglasses for example have a light cyan reflection and lower CCT and duv very slightly.
Here is the backup. My Luckysun D80 from a few years back came with a purple coated lens, my Wildtrail D80 V2 from last year came with a green coated lens. I tested the tint in the hotspot of the same flashlight (D80 V2 modded with sliced “dogfart” led) on the same setting (350mA) without, with purple and with green lens. (I forgot to write down the CCT with the purple lens, sorry about that).
Thanks for the data, the reflected color looks like some sort of turquoise hence the slight CCT decrease, I don’t know why it seems that AR coatings have to reflect some wavelengths, but IMO delta –0.0010 is preferable to any duv increase.
I had this thought when the D80 V2 came out, thanks for mentioning this. It’s good to know I wasn’t imagining the duv shift.
I also think a version of the D4 that has variable tint would be an interesting light. 4 emitters would be a tradeoff for output versus compatibility with optics, but I think it would be a good tradeoff for an uncommon feature like variable tint.
I think the driver could be similar to the KR4. Instead of the two channels being 5A constant current + FET, they could be 5A + 5A constant current. This should still produce 1200 lumens or more.