Guide Number
21 m/69 ft. (at ISO 100, 18mm zoom-head position, 20°C/68°F) to 30 m/98.4 ft. (at ISO 200, 18mm zoom-head position, 20°C/68°F)
Electronic Construction
Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Flash Exposure Control
i-TTL Balanced Fill-Flash with CLS compatible cameras
Manual
Manual Flash (with Nikon Creative Lighting System digital and 35mm SLR cameras)
Rear-curtain sync
Red-eye reduction
Red-eye reduction in Slow-sync
Shooting options: FV Lock Flash
Slow-sync
Lens Coverage
18mm (DX-format)
27mm (on a Nikon F6)
Bounce Function (Tilt)
Flash head tilts up to 90° with click-stops at 0°, 60°, 75°, 90°.
Minimum Recycling Time
2.5 sec. (approx.) with Ni-MH batteries
3.1 sec. (approx.) with Oxyride™ batteries
3.9 sec. (approx.) with Alkaline batteries
4.2 sec. (approx.) with Lithium batteries
Flash Duration
1/300 sec. at M 1/1 (full) output. (Approx.)
Power ON/OFF
Turn the SB-400 on and off using the ON/OFF switch.
Required Power Source
Two 1.5V or lower (Alkaline-manganese, Lithium, Oxyride) batteries
Two 1.2V 2600mAh (Ni-MH rechargeable) batteries
Flash-ready Indicator
Blinks: insufficient light, insufficient battery power, incompatibility of camera with SB-400 or overheating.
Minimum Number of Flashes / Recycling Time
90/4–30 sec. (1000mAh NiCd)
140/3.9-30 sec. (1.5V Alkaline-manganese)
150/3.1-30 sec. (1.5V Oxyride™)
210/2.5-30 sec. (1.2V Ni-MH)
250/4.2-30 sec. (1.5V Lithium)
Dimensions
2.6 x 2.2 x 3.1 in. (66 x 56.5 x 80 mm) (Approx.)
Nikon