Camera Flash / Speedlight: Nikon SB-50DX Speedlight Flash Unit Flashgun
Model Name: Nikon SB-50DX Speedlight Flash Unit Flashgun
Image:Nikon SB-50DX Speedlight Flash Unit Flashgun
Fivercam Price (used) UK
eBay Price (used) UK
Release Date2002
Strenght / Power
Guide Number (ISO100, meters) Flash Specs GN 72 feet (ISO 100/feet) at 35mm position
Power Level Switching (Vari-power Range)
Head & Coverage
Bounce (Up-Down) Head Movementhead tilts up max 90° and down to minus 18°, with click stops at 90°, 75°, 50°, 0°, and -18°
Swivel (Rotation) Head movementNo
Focal Length Coverage Flash Specs
Auto Zoom Head Flash Specs
Flash Related Functions
Flash Durations Flash Specs
Flash Modes(TTL) Flash Specs
Flash Exposure Compensation / Correction Flash Specs
Secondary Illumination Flash Specs
Wireles Flash
Wireless Operation Flash Specs No (possible with Nikon SU-4 device)
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 - Batterry2x CR123A or DL123A
External Power
Minimum Recycle Time (Charging time between shooting) Flash Specs 260 times or more with approx. 3.5 sec.
Battery Life Flash Specs
Dimensions & Weight
DimensionsApprox. 63 x 107 x 105 mm (2.5 x 4.2 x 4.1 in.)
Weight8 1/2 oz (240g)
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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