Guide Number
- 34/111.5 (ISO 100, m/ft), 48/157.5 (ISO 200, m/ft)
Electronic Construction
- Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Flash Exposure Control
- Camera’s sync modes: Slow-sync; Red-eye reduction in Slow-sync; Front-curtain sync; Rear-curtain sync; Rear-curtain Slow-sync Shooting functions: Auto FP High-Speed sync; FV Lock flash
Lens Coverage
- 17 to 200mm (FX-format, Automatic mode)
- 12 to 200mm (DX-format, Automatic mode)
- 12 to 17mm (FX-format, Automatic mode with built-in wide-angle panel deployed)
- 8 to 11mm (DX-format, Automatic mode with built-in wide-angle panel deployed)
Bounce Function (Tilt)
- Flash head tilts down to -7° or up to 90° with click-stops at -7°, 0°, 45°, 60°, 75°, 90°
Bounce Function (Rotate)
- Flash head rotates horizontally 180° to the left and right with click-stops at 0°, 30°, 60°, 90°, 120°, 150°, 180°
Minumum Recycling Time
- 4.0 sec. with Alkaline-manganese (1.5V)
- 4.5 sec. with Lithium (1.5V)
- 3.0 sec. with OxyrideTM (1.5V)
- 2.3 sec. with Ni-MH (2600 mAh)
Flash Duration
- 1/880 sec. at M1/1 (full) output
- 1/1100 sec. at M1/2 output
- 1/2550 sec. at M1/4 output
- 1/5000 sec. at M1/8 output
- 1/10,000 sec. at M1/16 output
- 1/20,000 sec. at M1/32 output
- 1/35,700 sec. at M1/64 output
- 1/38,500 sec. at M1/128 output
Required Power Source
- Use four AA-type batteries of any of the following types:
- Alkaline-manganese (1.5V) batteries
- Lithium (1.5V) batteries
- Ni-MH (1.2V) batteries
Dimensions
- Approx. 3.0 × 5.7 × 4.7 in. (78.0 × 146.0 × 118.5 mm)
Weight
ISO Range
Optional Power Supply
- SD-9 High-Performance Battery Pack
- SD-8A High-Performance Battery Pack
- SK-6 Power Bracket Unit
Ready Light
- The SB-900 indicates unit is fully recycled: Rear ready-light lights up and the front light blinks. Insufficient light for correct exposure (in i-TTL, Auto Aperture flash, Non-TTL Auto flash, or Distance-priority manual flash operations): both rear and front (in remote setting) ready-lights blink.
Minimum Number of Flashes
- 110 with Alkaline-manganese (1.5V)
- 230 with Lithium (1.5V)
- 190 with Ni-MH (2600 mAh)
- Note: When firing Speedlight at full output once every 30 seconds (120 seconds with lithium).
Wireless Flash Modes
- Off
- Master
- Master (Repeating)
- Remote
- SU-4
Wireless Communication Channels
Wireless Groups
Supplied Accessories
- AS-21 Speedlight Stand, SW-13H Diffusion Dome, SJ-900 Color Filter Set, SZ-2 Color Filter Holder, SS-900 Soft Case