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Ikelite DS-51 Compact & Lightweight Substrobe Unit (This is the Strobe only, Does not come with mount, arm, etc.>50 Watt/seconds power with a guide #28 (underwater at ISO 100)
Operates TTL when connected by an appropriate sync cord to some Ikelite housings or manual exposure mode with six manual power settings in one-half f-stop increments
70° angle of coverage, 80° with diffuser
Recycle time of 3.5 seconds (Full power)
Up to 200 flashes with full power batteries
5700° kelvin color temperature
The Ikelite Digital SubStrobe DS-51 was created specifically for use with digital cameras because of their use of preflash metering, but it is completely compatible with all film cameras and film camera housings.
The DS-51 offers 50 watt-seconds of power in a compact size with coverage adequate for lenses as wide as 28 mm, or add the included diffuser for wider coverage and softer lighting. Combine multiple strobes to cover very wide angle lenses with minimal illumination of particles suspended in the water.
The DS-51 operates TTL when connected by an appropriate sync cord to some Ikelite housings. Alternatively, the DS51 provides a manual exposure mode with six manual power settings in one-half f-stop increments for precise illumination of subjects.
For even more precise control the DS-51 can be connected to The Manual Controller. This provides ten power settings in half/stop increments. The Manual controller can operate as a wireless sensor triggered by another strobe, or it can be connected by one of the Ikelite sync cords.
Configuration: Strobe head only
Guide No.: 56 Surface, 28 Underwater
Power Rating: 50 Watt/seconds
Coverage Angle: 70° (28mm Lens Coverage) 80° with diffuser
Depth Rating: 300' (90 m)
Flash Modes: TTL, Manual Exposure Control, Six manual power settings in one-half f-stop increments
Targeting Light: No
Audible Signal: No
Color Temperature: 5700° K
Recycle Time: 3.5 Seconds
Flashes (Full Power): Approx. 200
Power Source: 4x AA Batteries
Dimensions: 3.2 x 3.2 x 4.7" (81 x 81 x 119 mm)
Weight (Land): 1.3 lb (0.59 kg)