550kcd+ Emisar D1Sv2 coming this month!

According to Hank:

Sounds like it will have a 70mm head. I hope for nice body colors, a short tube and some neutral white options as well. :+1:

Sounds great!

Do they make those Osram LEDs in anything but 6500k? I don’t know that I’ve ever seen any neutral or warm tints but I’m not very experienced with the emitter.

tthat’s good news

There are a few tint bins but the range is limited, I think 5400K is the lowest. Kaidomain managed to source a batch of the lower CCT tint-bins for the PM1 White Flat version (2mm2). link

Is there anyone can translate 550kcd equal to distance in meters or km…?

Awesome news. I always look osram led beam in youtube. Beam look very2 intense…

If I’m not mistaken a bit less than 1.5 km.

550 kcd = 550,000 cd = defined as the brightness at 1meter distance
Throw distance is defined as the distance at which the brightness is reduced to 0.25 cd (=about moonlight illumination)
So at throw distance the bightness has decreased 550,000 x 4 = 2,200,000 times compared to 1 meter distance
Brightness decreases with the square of the distance, so we need to take the root of 2,200,000 to arrive at the throw distance, this is 1483 meter.

throw=sqrt(cd/.25)
so 1483.23969742m

But the lower temperature tint bins are above the BBL unfotunately. Has anyone tried the Kaidomain one to see if it is more greenish?

0.5 or 1 lux is more pratical, 0.25 lux is barely visible in most cases

I will definitely be looking at those when they are released. I have a decent collection of Emisar’s.

What will be the lumen output? Around 1500 lumens? Gonna be a pencil beam.

My guess would be 800-1000 lumens, but that is very generous. the chip is rated for 800 lumens with a max of 1000 lumens

This is true, but the standard specs use 0.25 lux. So people stick with that, to make numbers comparable across the entire industry.

Yes, it will probably be the pencil-est of pencil beams. At 550 kcd and maybe 800 to 1000 lumens, that’s 550 to 687 cd/lm. So the beam will probably be even tighter than the BLF GT. It has slightly more cd/lm and the reflector is smaller, so we can expect this one to perform extremely well at a distance but won’t really be useful up close.

Basically, it’s optimized specifically to be as “pencil beam” as possible.

If this ends up being offered with an XHP35 Hi I might be interested, even though I really don’t need another thrower.

It’d be interesting to see how far the K75 shone until it recorded 0.01 lux. I’ve seen it hit white buildings at well over 3000m

Would be great to see the light offered with XP-L HI and SST-40 as well for more options in beam profile and tint. A CC driver hitting ~5-6A at max would be perfect for those as well.

That my new lesson today. Tq, appreciated it.

  • KCD to distance(meter or km)
  • beam profile which is candela/lumen(cd/lm) in this case, cd is really intense while lumen is moderate, thus generating a pencil-look-like beam