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

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

mbp wrote:

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.

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…

hasddie293 wrote:

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

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 × 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.

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.

mrheosuper wrote:

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

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

Tubercle wrote:

Gonna be a pencil beam.

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.

ToyKeeper wrote:

mrheosuper wrote:

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

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

Tubercle wrote:

Gonna be a pencil beam.

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.

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.

djozz wrote:

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 × 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.

ToyKeeper wrote:

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.

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

Hank said the head is 70mm. Doesn’t 550kcd seem a bit less for that size?

hasddie293 wrote:

That my new lesson today. Tq, appreciated it.

• beam profile which is candela/lumen(cd/lm)

Yes, the metric used to quantify beam shape is “cd/lm”. Here’s a rough guide for what that means.

Assuming XP-L HI in each light (except D18 and D1S V2), Emisar’s products go in this order from most floody to most throwy:

• light bulb: ~0.1 cd/lm
• D4: ~4 cd/lm, ~4300 lm
• D18: ~4 cd/lm, ~14000 lm
• D4S: ~11 cd/lm, ~4500 lm
• D1: ~33 cd/lm, ~1300 lm
• D1S: ~100 cd/lm, ~1300 lm
• D1S V2: ~600 cd/lm?, ~800 lm? (TBD)
• laser: ~10000 cd/lm

For general-purpose “EDC” style use, people mostly like items in the range of roughly 3 to 30 cd/lm, with the D4S’s 11 cd/lm being a very versatile balance. The D4S is a bit large though, so I’d really like something D4-sized or smaller with a single emitter and a ~10 to ~15 cd/lm beam.

I generally use the D4 most because it’s the smallest and has a clip, but the D4S has my favorite beam of the bunch. The D1 is also handy since in 18350 form it’s small enough to forget about in my purse until I need it, and it’s throwy enough for almost anything I ever need.

With D1S and D1S V2, they’re extremely good at what they do, and are unusually compact for the amount of throw they achieve… but it’s rare that I ever need or want that much throw. For people who do need it though, it’ll basically leave almost everything else in the dust, especially for the price.

He also said there are no plans fora SBT90 Gen2 version

550 kcd sounds right. I have a 72mm head with a oslon black and it only does 550kcd.
But I wish he would give us a rear clicky. Side clicky are nice if it was a high output thrower. But for a pencil beam dedicated thrower, a rear switch is better imo.

Rear clickies have two disadvantages: restricted UI choice and internal switch resistance.

That 1st point is obvious.

That 2nd point is having a good enough switch to support high current is quite expensive. Well, compared to an electronic switch anyway.

There’s something less obvious though: standardization for Emisar lights.
By only using e-switches, it makes it easier for them in terms of making stuff, and less overall costs.

Th558 wrote:

He also said there are no plans fora SBT90 Gen2 version

I’m sure there will be a Skylumen version with the SBT90.2

Th558 wrote:

He also said there are no plans fora SBT90 Gen2 version

If we look at LED price comparison e.g, sst40.sst20, nichia, xhp35, xhp50.2, xhp70.2, osram WF, XPL…vs the SBT90.2

When it come to about, making profit…everything must be lower price as possible as cheaper as it is!

hasddie293 wrote:

Th558 wrote:

He also said there are no plans fora SBT90 Gen2 version

If we look at LED price comparison e.g, sst40.sst20, nichia, xhp35, xhp50.2, xhp70.2, osram WF, XPL…vs the SBT90.2

When it come to about, making profit…everything must be lower price as possible as cheaper as it is!

blueb8llz wrote:

550 kcd sounds right. I have a 72mm head with a oslon black and it only does 550kcd. But I wish he would give us a rear clicky. Side clicky are nice if it was a high output thrower. But for a pencil beam dedicated thrower, a rear switch is better imo.

So you want a FW1A GT?

Needs a fixed aspheric lens option! How cool would that be

BlueSwordM wrote:

Rear clickies have two disadvantages: restricted UI choice and internal switch resistance.

That 1st point is obvious.

That 2nd point is having a good enough switch to support high current is quite expensive. Well, compared to an electronic switch anyway.

There’s something less obvious though: standardization for Emisar lights.
By only using e-switches, it makes it easier for them in terms of making stuff, and less overall costs.

For a light like this, regulated at ~5A or ~6A, the switch resistance is a much smaller factor than it would be in something like a D4 or D18. It may still be difficult to do well, but it’d be a lot easier than with really high-powered lights.

As far as UI goes, I added tail-clicky support two years ago. Most UI functions are on a side e-switch, and the tail provides momentary activation at the last-ramped level. It works fine, from what I’ve heard, and does exactly what people usually want the tail switch to do in a thrower.