Camera Flash / Speedlight: Nissin i40 Flashgun Flash Unit Flashgun for Sony
Model Name: Nissin i40 Flashgun Flash Unit Flashgun for Sony
Image:Nissin i40 Flashgun Flash Unit Flashgun for Sony
Fivercam Price (used) UK
eBay Price (used) UK
Release DateDec, 2014
Strenght / Power
Guide Number (ISO100, meters) Flash Specs 131.23' / 40 m at ISO 100 (105 mm Position)
Power Level Switching (Vari-power Range)1/1 to 1/256
Head & Coverage
Bounce (Up-Down) Head Movement0 to +90°
Swivel (Rotation) Head movement360°
Focal Length Coverage Flash Specs Full-Frame 24 to 105 mm 16 mm (with Wide-Angle Adapter)
Auto Zoom Head Flash Specs
Flash Related Functions
Flash Durations Flash Specs 1/800 to 1/20000 Second
Flash Modes(TTL) Flash Specs Sony ADI / P-TTL Hi-Speed Sync, Second-Curtain Sync, Slow Sync
Flash Exposure Compensation / Correction Flash Specs -2 to +2 EV (1/2 EV Steps)
Secondary Illumination Flash Specs Video Light
Wireles Flash
Wireless Operation Flash Specs Optical Pulse (TTL/Manual) Unspecified Range (Optical Slave)
Wireless Groups Flash Specs 3
Wireless Channels4
Remote Timing ModesNone
Other Features
MountHot-shoe mount flash
Off Camera Terminal / External Connectors
Included AccessoriesSoft case, Flash stand (with screw), Soft box, Carabiner (not for climbing)
Other Functions
Power Source & Recycle Time
Power Source - Batterry4 x AA
External Power
Minimum Recycle Time (Charging time between shooting) Flash Specs Approx. 0.1 to 4 Seconds
Battery Life Flash SpecsNumber of flashes: 220 – 1,700 flashes (Approx.) LED video light lighting time: 3.5hrs (Approx.)
Dimensions & Weight
Dimensions3.3 x 2.4 x 3.3" / 83.82 x 60.96 x 83.82 mm
Weight203g/ 7.16oz (without batteries and soft box)
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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