



Electronic construction
Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Guide number (20°C/68°F)
18/59 (ISO 100, m/ft)
Angle of illumination
Covers angle of view of 27 mm lens (FX format) or 18 mm lens (DX format)
Effective flash range (i-TTL)
0.6 m to 20 m (2 ft to 66 ft); varies with ISO sensitivity, bounce angle, and aperture
Options available using camera controls
Flash control mode: i-TTL, manualFlash mode: Fill flash (front-curtain sync), front-curtain with slow sync, rearcurtain sync, and rear-curtain with slow sync
Bounce angle
Flash rotates vertically up to 120° with stops where the flash is pointing directly ahead and at 60°, 75°, 90°, and 120°
Power source
Two AAA alkaline or NiMH batteries
Flash-ready light
Charging complete: LightsWarning: Blinks
Flash duration
Lights for about 1/1650 s when fired at full power
Battery endurance and flash recycling time *1
Alkaline : Approx. 4.0 s (minimum recycling time *2), 70 or more uses / 4.0 - 30 s (endurance *3 / recycling time *2)NiMH : Approx. 3.5 s (minimum recycling time *2), 110 or more uses / 3.5 - 30 s (endurance *3 / recycling time *2)
Mounting foot lock lever
Locking pin prevents accidental detachment
Other options
Thermal cut-out, firmware update *4
Dimensions (W x H x D)
Approx. 57.4 x 65.4 x 62.3 mm (2.3 x 2.6 x 2.5 in.)
Weight
Approx. 120 g (4.2 oz), including two AAA alkaline batteriesApprox. 97 g (3.4 oz), body only
Supplied accessories
Soft Case SS-DC1