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Order number: BC31.632.XX
SIROS is THE Monolight
Siros is fast
With flash durations from 1/8000 s (t 0.1) or 1/13’000 s (t 0.5) and recycling times from 0.02 s you can capture every moment perfectly.
Siros is simple|
Operation using either the single rotary controller or the advanced app - both are intuitive.|
Siros is universal|
Radio synchronisation uses either broncolor RFS 2.1 or PocketWizard. PocketWizard opens up the HyperSync™ world.|
Siros is powerful|
High light output, up to 800 joules, in a robust housing leaves no photographer standing in the dark.|
Siros is Swiss|
Swiss precision and quality - inside and out.|
Siros is family|
It is available in standard and S variations, in 400 and 800 joules versions.|
For over 50 years broncolor has refused to compromise on the quality of light. In this sense, Siros is a true broncolor product.
The Siros S includes the ECTC technology you know from our high-end Scoro and Move power packs. ECTC controls the flash curve and guarantees flash durations from 1/13’000 s (t 0.5) and constant colour at all times.
The enormous control range goes up to 9 f-stops, resulting in output as low as 2 joules which gives the photographer an unrestricted choice of aperture. And the lightning-quick charging time, 0.02 to 0.90 s at 400 joules, means you never have to wait.
broncolor offers the world's most comprehensive range of light modifiers. Siros is fully integrated into this system of unlimited creative possibilities. But that is not all! Two new reflectors have been developed especially for Siros: An umbrella reflector, which is equipped with a cover that also serves as transport protection, and a size-optimised reflector, the L40, with a snap-in system for mounting honeycomb grids.
Operation with the new“bronControl"; app
All the basic functions of Siros can be operated using the new “bronControl"; app. As soon as Siros is associated with the WiFi network, each device in a studio is clearly identified by different-coloured LEDs and can be controlled using a smartphone or tablet.
The photographer can make all necessary settings at the camera and centrally using the tablet - convenient and simple. That saves time and lets the photographer concentrate more intensely on his or her work.
Simple and ergonomic
Less is more. When it came to developing Siros, the design team concentrated on a single point: the nitty-gritty. Simple and intuitive operation were centre-stage. The external housing is a single-piece of aluminium. This ensures optimum protection for the advanced technologies inside and, at the same time, gives Siros its light and elegant appearance.
The output of Siros and its menu navigation are both regulated by a single rotary controller. The energy regulation, for instance, can be adjusted with a slight turn for steps of 1/10th of an f-stop, and a new “Twist"; function for whole f-stops.
The newly-developed grip is a double-wall plastic component with a special coating; it is very robust and extremely comfortable to handle. The stand adapter is made of aluminium and, together with the handle, which was specially designed for the purpose, can be used as a built-in floor stand.
Siros was developed for the complete range of broncolor light modifiers! That makes Siros the most versatile monolight on the market. The open design of the flash tube ensures optimum illumination for every light modifier.
broncolor offers a solution for every light mood and for every photographic or creative challenge. With cross-system compatibility, even if you add studio or battery-operated power packs from broncolor to your equipment, every penny you invest in accessories and light modifiers will remain usable - without restriction.
With regard to triggering, Siros is universal. It is integrated into broncolor's own radio system, RFS 2.1, but if you so choose it can also be equipped with a built-in PocketWizard receiver. In addition, a standard sync cable and a built-in photocell are also available for synchronisation
With their outstanding light quality, Siros monolights are the perfect complement for existing studio flash installations.
Traditionally monolights are a popular point of entry to studio flash photography. To make it easier to get into the system, Siros is also available in complete
kits carefully composed for particular applications.
Each kit is supplied with a compact, practical Flash Bag trolley case. Accessories - such as stands, softboxes and umbrellas - can be stored in the special accessory bag, which is designed to be strapped on to the Flash Bag.
PocketWizard and HyperSync™
Siros always flashes. Siros is fully incorporated in the broncolor RFS 2.1 system, and so it is ideal for extending existing studio flash installations. It is
primarily the light quality that Siros provides, particularly regarding colour stability and flash duration, which makes this a sensible way to expand a system.
When required Siros units can be ordered with an integrated PocketWizard receiver. In this configuration they enable integration into existing environments and open the door to the world of HyperSync™ photography (requires special HS flash tube).
With HyperSync™ your camera and flash equipment can be combined with the maximum flash synchronisation time (X-Sync). This enables exposure times as short as 1/8000 s. The optimum coordination of Siros and PocketWizard enables unrestricted creativity and combines this with the simplest possible handling.
Elegant and robust - Made in Switzerland
You can sense Siros' performance and robustness from afar. But Siros is as easy and simple to use as its elegant and it's black aluminium body gives it a powerful look.
Siros is completely designed and developed in Switzerland. Production and quality control remain at the headquarters of Bron Elektronik AG. Our commitment guarantees the familiar high quality of every broncolor device.
Innovative technologies from the prize-winning Scoro and Move power packs have been adapted to the Siros S monolight.
Flash duration and light output are the two decisive factors in light control. A microprocessor in the Siros will calculate the shortest flash duration for a given output for you. This enables rapid flash sequences with up to 50 flashes per second.|
Constant colour temperature –ECTC
The second generation of our patented ECTC (Enhanced Colour Temperature Control) technology, which adapts flash voltage and flash duration to each other, achieves a constant colour temperature over the entire output range.|
Enormous control range|
With Siros S you have a choice of 9 f-stops to set the flash output you need, from the top power level all the way down to 2 joules.|
When the instant counts, it is time for Speed! In Speed Mode you can set the fastest flash duration as the exclusive priority. When using Speed Mode, constant colour temperature functions (ECTC) are suppressed.|
SIROS - Technical data
f-stop at 2 m distance, 100 ISO (61/2 ft)with refl ector L40
with refl ector P70
Flash duration t 0.1 (t 0.5)min. energy
with HS fl ash tube*
Charging time(for 100% of selected energy)
230 V/50 Hz
120 V/60 Hz
100 V/50 Hz
Control range of flash energy|
7 f-stops in 1/10 or full f-stop intervals|
Colour temperaturemax. energy/P70
with HS fl ash tube/P70
Automatic adaptation to the mains (AC-line) voltage 100–120 V/50–60 Hz: 5.5 A,200–240 V/50–60 Hz: 3.5 A
Operation via external battery converter possible for mains-independent operation
Halogen max. 300 W/120 V, off, proportional to fl ash energy or full power|
Manual release button, photocell, sync cable, optional with either integrated broncolor RFS 2.1 orPocketWizard receiver
via bronControl app for mobile devices (only for units with integrated W-Lan)RFS 2.1 transmitter (only for units with integrated RFS 2.1 receiver)
Visual and audible (can be switched off)|
- Sequences up to 50 fl ashes- HyperSync™ in combination with integrated PocketWizard receiver and HS fl ash tube
- Integrated umbrella mount and integrated umbrella refl ector
- Speed Mode for fastest fl ash durations
- USB connection for software updates
- Power electronics temperature control
- Internal discharge when power is reduced
Fan, temperature controlled|
EN60065/EN61000-4-2, EN55015, EN301489-1/EN301489-3, ISO10330|
Dimensions (L x W x H)|
32 x 13 x 18 cm (12.6 x 5.1 x 7.1"")|
Siros special accessories|