Camera Flash / Speedlight: Sigma EF-610 DG ST Flash Unit Flashgun for Nikon
Model Name: Sigma EF-610 DG ST Flash Unit Flashgun for Nikon
Image:Sigma EF-610 DG ST Flash Unit Flashgun for Nikon
Fivercam Price (used) UK
eBay Price (used) UK
Release Date
Strenght / Power
Guide Number (ISO100, meters) Flash Specs 200.13' / 61 m at ISO 100 (105 mm Position)
Power Level Switching (Vari-power Range)1/1 to 1/16
Head & Coverage
Bounce (Up-Down) Head Movement-7 to +90°
Swivel (Rotation) Head movement270°
Focal Length Coverage Flash Specs Full-Frame 24 to 105 mm 17 mm (with Wide-Angle Adapter)
Auto Zoom Head Flash Specs
Flash Related Functions
Flash Durations Flash Specs 1/700 Second at Full Power
Flash Modes(TTL) Flash Specs Nikon i-TTL Second-Curtain Sync
Flash Exposure Compensation / Correction Flash Specs -3 to +3 EV (1/3, 1/2 EV Steps)
Secondary Illumination Flash Specs None
Wireles Flash
Wireless Operation Flash Specs None
Wireless Groups Flash Specs
Wireless Channels
Remote Timing Modes
Other Features
MountHot-shoe mount flash
Off Camera Terminal / External Connectors
Included Accessories
Other Functions
Power Source & Recycle Time
Power Source - Batterry4 x AA (Alkaline, NiCad, NiMH)
External PowerNo
Minimum Recycle Time (Charging time between shooting) Flash Specs Approx. 5 to 7 Seconds
Battery Life Flash SpecsNumber of flashes: 120 (flashes per set of batteries)
Dimensions & Weight
Dimensions3 x 5.5 x 4.6" / 77 x 139 x 117 mm
Weight11.64 oz / 330 g (without Batteries)
More Details or Support Website: Link
Item 1
Fivercam Wiki information:

There are three ways to trigger off-camera flash units wirelessly: via infrared, radio signals or a hybrid method that involves both infrared and radio. The infrared system works like the TV remote; there need to be a direct line of sight for the signal to reach the destination. The radio signal has no line-of-sight limitations, but comes at a rather high cost. The hybrid system simply takes the infrared signal from the commander, converts it over to radio and then converts it back to infrared on slave units.

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