The SB-400* has been developed to provide an entry-level external flash unit that is compatible with i-TTL flash operation and provides i-TTL flash operation in a compact and lightweight body at an affordable price
The SB-400 offers a guide number of 30 (ISO 200, m), and effortless bounce flash function
In combination with cameras compatible with Nikon Creative Lighting System, the SB-400 is controlled in i-TTL and D40?s M (manual) mode
Its flash head can be tilted in four steps - horizontal, 60, 75 and 90 degrees - and has a flash shooting distance range from 0.6m to 20m (depending upon the ISO setting)
Slow Sync, Red-eye Reduction, and other flash modes can also be set on the camera body
With the SB-400, users can easily enjoy brighter and more natural lighting for better flash pictures
*SB-400 cannot be used with cameras incompatible with Nikon?s Creative Lighting System. SB-400 is not compatible with Advanced Wireless Lighting
Compatible with i-TTL and D40?s M mode
Flash shooting distance range: 0.6m - 20m (depending on the ISO setting)
Guide number: 30 [ISO 200, m, 20°C]
Angle of coverage: 18mm (with Nikon-DX format cameras), 27mm (with Nikon F6)
Depending on the camera in use, the following flash modes are available: Slow Sync, Red-eye Reduction, Red-eye Reduction with Slow Sync, Rear-curtain Sync, FV Lock, Exposure Compensation, M (manual, only with D40 camera)
Power source: two AA-size 1.5V batteries (also compatible with lower voltage batteries)
Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry
Guide number (20°C/68°F) 30/98.4 (ISO 200, m/ft), 21/69 (ISO 100, m/ft)
Angle of coverage - Light distribution covers an 18mm lens when mounted on a Nikon DX format camera and a 27mm lens when mounted on an F6
Flash shooting distance range - 0.6m to 20m (2 to 66 ft.) (Varies depending on the ISO sensitivity, zoom-head position, and lens aperture in use)
Flash mode - i-TTL, M (manual, only with the D40)
Compatible cameras - All cameras compatible with Nikon Creative Lighting System
Flash exposure control set on the camera - Slow-sync, Red-eye reduction, Red-eye reduction in slow sync, Rear-curtain sync flash, FV Lock flash, manual flash (with D40 camera)
Bounce capability - Flash head tilts up to 90° with click-stops at 0, 60, 75, 90 degrees
Mounting foot lever lock - Provides secure attachment of SB-400 to the camera accessory shoe with a mount pin to prevent accidental detachment
Dimensions (W x H x D) Approx. 66 x 56.5 x 80mm (2.6 x 2.2 x 3.1 in.)
