The Sigma EF-610 DG ST is multifunctional shoe mount type flash, featuring a powerful Guide Number of 61 and designed to work with the most popular digital SLR cameras. This flash unit provides fully automatic flash photography for digital SLRs with automatic TTL exposure control. It combines a convenient array of functions with ease of handling, and includes an Autozoom head that automatically sets the optimum illumination angle between 24mm and 105mm, as well as offering bounce and swivel capability.
The Sigma EF-610 DG ST is designed to work with the latest TTL auto exposure systems of most popular manufacturers` digital SLR cameras. The camera will control the amount of flash lighting to achieve the appropriate exposure for the subject.
Autozoom function for changing the illumination angle
This function automatically sets the optimum illumination angle in accordance with the lens' focal length in a range from 24mm to 105mm. When the built-in Wide Panel is used, the flash can cover an angle of up to that of a 17mm lens.
Bounce-flash function with movable flash head
The flash head can be tilted up by as much as to 90° and swivel to the left by 180°, or to the right by 90°. Bounce photography, in which light is reflected off a white wall or the ceiling or a reflector, increases your range of photographic expression. As the flash head can also be tilted down by 7°, the flashgun can also be used for close-up photography.
Catch Light Panel
This flash is equipped with a built-in catch light panel, which can create a sparkle in the eyes of the subject when the bounce flash mode is activated.
Power source: Four AA alkaline or AA NiCd or Ni-MH (Nikel Metal Hybride) batteries.
Charging time: 7 seconds (alkaline batteries) Approx. 5 seconds (NiCd, Ni-MH batteries).
Number of flashes: Approx. 120 flashes (alkaline batteries) Approx. 160 flashes (NiCd, Ni-MH batteries).
Illumination angle: Automatically set in accordance with the focal length of the lens, in a range from 28 mm to 105 mm. Also covers the angle of a 17-mm lens when used with the built-in Wide Panel.
Bounce angle (Up): 0, 60, 75, 90 degrees.
Bounce angle (Right): 0, 60, 75, 90 degrees.
Bounce angle (Left): 0, 60, 75, 90, 120, 150, 180 degrees.
Tilt angle (Down): 0, 7 degrees.
Weight: 330g (without batteries).
Dimensions: 77 X 139 X 117mm.