The Siros 400 L Battery-Powered Monolight from Broncolor is the latest in the Siros series of monolights. Powered by a Li-ion battery, the flash head gets up to 440 full-power flashes on a 70-minute charge. The modeling light is a 25W LED to conserve battery power.

Speed is central to the design of the Siros L. Recycling is a lightning fast 0.03 to 1.2 seconds, while normal t0.5 flash duration is as short as 1/11300 sec. There's also a Speed Mode that bypasses the Siros L's Enhanced Color Temperature Control to prioritize short flash durations and fast recycle speeds. The result is a flash duration of 1/19,000 at minimum power: fast enough to freeze water droplets and other stop action effects. The Siros L has a 9-stop variable power range from full power all the way down to 2 Ws. While at higher settings it's possible to out-flash the sun, lower settings allow use of even the widest apertures for your desired effect. All functions are available on the simple, intuitive panel via an ergonomic rotary controller, but you also have access to the menus and controls of up to 6 units using your tablet or smartphone and the free bronControl app.

The Siros 400 L features Broncolor HS for syncing at shutter speeds up to 1/8,000s. Broncolor HS requires an RFS2.2 transmitter, available for Canon, Nikon, and Sony cameras. Existing Siros owners should ensure that their lights have the latest user-upgradable firmware, available online at www.bron.ch/sirosfirmwareupdate/.

2 x 400Ws Flash Heads    440 Full-Power Flashes    Li-Ion Battery    70-Minute Recharge    0.03 - 1.2 Sec Recycling    Speed Mode Flash Duration: 1/18000 Sec    9-Stop Flash Range    Built-In Wi-Fi and RFS Receiver    bronControl App    Up to 50-Shot Flash Sequencing

A single fully-charged lithium-ion battery stores enough energy for a Siros 400 L to flash more than 440 times, and it does that at maximum power.

In only 0.03 seconds, your Siros L is ready again. The flash duration can as fast as 1/9000 sec (t 0.1) or 1/19000 sec (t 0.5).

Flash duration and light output are the two decisive factors in light control. A microprocessor in Siros L will calculate the shortest flash duration for a given energy setting.

In Speed Mode, fast charging and short flash times have absolute priority. In this case, the calculation of constant color temperature (ECTC) is suppressed for quick results.

Very simple operation using the single rotary controller. Alternatively, you can use the advanced, intuitive app.

The high light output leaves no photographer standing in the dark. It can even challenge sunshine. And with a control range of 9 stops, you can still use wide-open apertures when needed.

With its low power consumption, the 25-watt LED module provides bright modeling light at a color temperature of 3200K. The light characteristics are absolutely comparable with the modeling light from a mains-operated Siros S.

Related Questions and Answers

Q: 1. Hello!I would like to know if you happened to know the exact size of this bag?Thanks

A: The Broncolor Flash Bag 2 dimensions are in inches,Length-42Width-9Height-7

Q: 2. does this come with the charge cable?

A: Yes, a multi-voltage charger is included.

Q: 3. Can this kit work in the studio with the power outlet instead of using the battery? And is there going to be an education price for this kit soon or later?

A: Unfortunately, this monolight system is only for use with a battery and cannot be plugged into AC power. As for student pricing, that would normally be posted on our EDU Advantage home page as the pricing becomes available. It would be best to check back to that page periodically for updates. http://bhpho.to/11A01z5

Q: 4. It is possible to use connected to the grid?

A: It is possible to use grids with this monolight with the help of the Broncolor Standard Reflector for Siros and Siros L Monolights B&H # BRRL40 and the grid set for it which is the Broncolor Honeycomb 3 Grid Set for L40 Reflector B&H # BRGS3L40. Please see the images below for reference.

Q: 5. What is the umbrella shaft size for this bead?

A: The Broncolor Siros 800 L Battery-Powered Monolight (B&H# BRS800LWFR2B) can take an 8mm diameter shaft umbrella. Please click on [Accessories] and then "Umbrellas " to see compatible options.

Q: 6. Is this enough to light a 120 x 180 cm Softbox?

A: Yes. More than enough power to illuminate a 120x180 cm.

Q: 7. Does this kit include rfs2.1 Transceiver ?

A: There is no RFS included in this kit. This is left open to for you to select the RFS that suits you best. The RFS 2.2 supports HS while the other RFS models do not.

Q: 8. What is the weight of 800L? What boom arm. do you recommend for overheads?

A: The Broncolor Siros 800 L Battery-Powered Monolight BH #BRS800LWFR2B is about 8.1 lbs. Manfrotto Superboom would be suitable. B&H # MA025BS

Q: 9. Can the output of the modelling light be controlled?

A: No

Q: 10. do the stands include in this kit?

A: No stands, I was disappointed when mine arrived, the lights are amazing, but its bad it advertises stands in the photo