Adrenaline_6
Newly Enlightened
Re: *NEW* Klarus ST11
Maybe this improved led setup and mode spacing will bring us the XT11 MKII shortly?
Maybe this improved led setup and mode spacing will bring us the XT11 MKII shortly?
*NEW* Klarus ST11 and ST2C
- Thread starter kj2
- Start date
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Re: *NEW* Klarus ST11
And maybe tell Supbeam that "infinite brightness" does not mean what they think it means....
and so forth.
And maybe tell Supbeam that "infinite brightness" does not mean what they think it means....
and so forth.
mattheww50
Flashlight Enthusiast
Re: *NEW* Klarus ST11
I have serious doubts that you can get 2.3 hours at 900 lumens. Do the arithmetic. If you use a 3100mah 18650 that is 1.35 Amps, which is about 5 watts, so you need 180 lumens per watt assuming the driver is 100% efficient, which it obviously isn't. At that power level and with current technology, there is no commercial LED that achieve that. So either it isn't 900 lumens for 2.3 hours, or isn't 2.3 hours at 900 lumens. The Cree data sheets suggest the real luminous efficiency at 6 watts is going to be around 120 lumens per watt. So my guess is that it may start at 900lumens, but will have to drop down considerably (to about 550 lumens) to get to the 2.3 hour claimed run time.
I have serious doubts that you can get 2.3 hours at 900 lumens. Do the arithmetic. If you use a 3100mah 18650 that is 1.35 Amps, which is about 5 watts, so you need 180 lumens per watt assuming the driver is 100% efficient, which it obviously isn't. At that power level and with current technology, there is no commercial LED that achieve that. So either it isn't 900 lumens for 2.3 hours, or isn't 2.3 hours at 900 lumens. The Cree data sheets suggest the real luminous efficiency at 6 watts is going to be around 120 lumens per watt. So my guess is that it may start at 900lumens, but will have to drop down considerably (to about 550 lumens) to get to the 2.3 hour claimed run time.
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Overclocker
Flashlight Enthusiast
Re: *NEW* Klarus ST11
not exactly what i was expecting...
not exactly what i was expecting...
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kj2
Flashaholic
Re: *NEW* Klarus ST11
Like the fact you can turn it on with both switches. Don't like that tail-switch must be "on" for strobe.
Like the fact you can turn it on with both switches. Don't like that tail-switch must be "on" for strobe.
Labrador72
Flashlight Enthusiast
Re: *NEW* Klarus ST11
It looks like besides the ST11 Klarus will release an ST2C model too. It shown in this video shot at IWA Germany where they also show the ST11 http://www.youtube.com/watch?v=aKqMA4_Nqwo
It looks like besides the ST11 Klarus will release an ST2C model too. It shown in this video shot at IWA Germany where they also show the ST11 http://www.youtube.com/watch?v=aKqMA4_Nqwo
Overclocker
Flashlight Enthusiast
Re: *NEW* Klarus ST11
well you can't turn it on using side switch if the tail (which is the main switch) is off
well you can't turn it on using side switch if the tail (which is the main switch) is off
ledmitter_nli
Flashlight Enthusiast
- Joined
- Jun 4, 2012
- Messages
- 1,433
Re: *NEW* Klarus ST11
Will wait for the XT12.
Will wait for the XT12.
kj2
Flashaholic
Re: *NEW* Klarus ST11
So, there will be two new klarus lights on my watch/to-buy list
So, there will be two new klarus lights on my watch/to-buy list
Overclocker
Flashlight Enthusiast
Re: *NEW* Klarus ST11
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Re: *NEW* Klarus ST11
I'm new on here....purchased the ST11 this week from goinggerar.com locally for $68 bucks. This light is bright! I mean really bright on high. The 225 lumens is also really bright. All in all a great light for the money!! A little large for carrying around all the time...but, okay for cargo pants and tactical pants.
I'm new on here....purchased the ST11 this week from goinggerar.com locally for $68 bucks. This light is bright! I mean really bright on high. The 225 lumens is also really bright. All in all a great light for the money!! A little large for carrying around all the time...but, okay for cargo pants and tactical pants.
kj2
Flashaholic
Re: *NEW* Klarus ST11
Price on this light is very nice thinking of buying it.
Price on this light is very nice
thinking of buying it.
Overclocker
Flashlight Enthusiast
Re: *NEW* Klarus ST11
next to the Nitecore MH25
pretty good flashlight! suitable for a very wide range of applications so naturally it doesn't excel in some areas. forward clicky tailswitch is the MASTER on/off. side button changes modes or puts it in standby. if tailswitch is off then side button doesn't do anything so goodnews no accidental activation here
only 4 brightness levels but they appear very well and evenly spaced-out to the human eye. it may not seem like it judging from the raw numbers on the specs sheet but the seemingly big jumps in the ST11 brightness levels are IMHO very well chosen for the vast majority of typical usage scenarios. very reminiscent of a Quark's spacing, but instead of 5 levels you only get 4. yes just like Quarks the ST11 has proper low modes.
it isn't obvious from the pictures but it doesn't have a typical tailcap, instead the head is unscrewed to change the battery.
takes long 70mm cells. flat tops no problem.
ceiling bounce on a light meter shows ~26% stepdown after 5 minutes.
but despite the driver being moved to the head it still uses PWM in typical Klarus fashion. it's a sufficiently high frequency so it isn't distracting.
next to the Nitecore MH25
pretty good flashlight! suitable for a very wide range of applications so naturally it doesn't excel in some areas. forward clicky tailswitch is the MASTER on/off. side button changes modes or puts it in standby. if tailswitch is off then side button doesn't do anything so goodnews no accidental activation here
only 4 brightness levels but they appear very well and evenly spaced-out to the human eye. it may not seem like it judging from the raw numbers on the specs sheet but the seemingly big jumps in the ST11 brightness levels are IMHO very well chosen for the vast majority of typical usage scenarios. very reminiscent of a Quark's spacing, but instead of 5 levels you only get 4. yes just like Quarks the ST11 has proper low modes.
it isn't obvious from the pictures but it doesn't have a typical tailcap, instead the head is unscrewed to change the battery.
takes long 70mm cells. flat tops no problem.
ceiling bounce on a light meter shows ~26% stepdown after 5 minutes.
but despite the driver being moved to the head it still uses PWM in typical Klarus fashion. it's a sufficiently high frequency so it isn't distracting.
Labrador72
Flashlight Enthusiast
Re: *NEW* Klarus ST11
The Klarus ST2C has been announced on the Klarus website http://www.klaruslight.com/plist_show.php?id=59&lge=en
The Klarus ST2C has been announced on the Klarus website http://www.klaruslight.com/plist_show.php?id=59&lge=en
kj2
Flashaholic
kj2
Flashaholic
Re: *NEW* Klarus ST11
Not really, and I find this a problem with Klarus lights. They do make nice lights, but it takes for ever to see a review on it. Klarus really should consider to
send some reviews their new light when it comes out.
Not really, and I find this a problem with Klarus lights. They do make nice lights, but it takes for ever to see a review on it. Klarus really should consider to
send some reviews their new light when it comes out.
