Very nice build. Who cares about PVC when you get performance like that. Does the PVC give you some usable spill to help with walking around in the dark?
Great throw, well done. To get 1350kcd throw with a 80mm lens you have done everything well: quality led, quality lens and very good performing collar. I'm as well curious about how you made the collar (or was it bought as is?)
Djozz if you haven’t checked out Linus thread gaston01 mentions in the OP you should. Lots of very interesting discussions about collars & various ways to optimize an aspheric build
Yes in darkness the PVC give some usable spills but to walk, I open the zoom and is converted to very good flood, I’ll take some pictures of it and upload ….and a mid-zoom shooting a stream of impressive light!
The led are from Fasttech Xpg2 R5 1A on Aluminum star then I reflow on sinkpad, the lens are 78mm from Kaidomain I buy 2, one goes good the other not
As I said, the secret is in the focus on collar height, the thickness of aluminium coke can may mean 1100 or 1200 KCDS ….
I'm a bit on a flashaholic ration at the moment (my girlfriend is getting annoyed lately about the time I spend hobbying and she is right), but at least reading BLF is not as disruptive for family life as hands-on testing/modding in my hobby-corner.
Can you explain to me why the collar is as large as it is? Couldn’t it be just slightly larger than the LED? The distance from reflector to LED is the same as the distance back to the LED so the aim should be the same even though a smaller reflector’s angles would be wider. It also seems a larger reflective surface would need to be more precisely smoothed and positioned.
OMG, Gaston! That is simply amazing! I had to read the throw figures 3 times before I was sure I was seeing one MILLION three hundred and fifty THOUSAND candela. Good lord! What a fantastic job! You didn't just build your own Deft X, you smashed it into the ground and doubled it's throw. Mighty impressive work.