The SIGMA ELECTRONIC FLASH EF-630 is a multifunctional clip-on type flash, which offers a greater output of light with a guide number 63. Among the diverse features loaded on this flash is TTL exposure control as standard as well as high-speed sync, rear-curtain sync and wireless flash functions. The Auto zoom function which is designed to work with focal length 24-200mm, bounce-flash function, Wide Panel and Catch-light Panel of the EF-630 are perfect for various kinds of photography. The rear LCD offers an intuitive user interface for fast and easy operation. For instance, the new dot matrix liquid crystal display ensures improved visibility of setting status and menu function, and D-Pad and dial on the side of the flashgun make changing settings easier than ever.
The dot matrix liquid crystal display is incorporated for this flash. Moreover, the D-Pad and dial on the side of the flashgun make changing settings, such as TTL auto exposure system, wireless flash, FP flash and rear-curtain sync, on the main screen and setup menu displayed on the LCD easier than ever. The flash is designed to disengage easily by one-click on the shoe lock lever. In addition, a flash sync terminal and notification beep sound when the flashgun is fully charged improves ease of use.
The maximum guide number is 63 for a high light level (when the focal length is 200mm). It is possible to change the illumination angle from 24mm wide to 200mm telephoto. It also covers an angle of a 17mm when used with the built-in Wide Panel.
The wireless TTL flash function will adjust the desired flash exposure automatically by flash light even if the EF-630 is detached from the camera. Remote control operation is possible between the camera and flash. When multiple flash units are used, the camera calculates the correct exposure automatically.
* It can be used with EF-610 DG SUPER and for wireless shooting with a built-in flash of a camera which has Transmitter function for wireless flash shooting.
Receive & Flash Function can be used with all camera models and it allows the flash to be fired away from the camera by the Transmitter(TX) unit though it is not possible to set flash exposure automatically.
The Dedicated Receive & Flash Function* for EF-630 allows the photographer to use two or more EF-630 flash units simultaneously. It is possible to designate flashguns by using different channel settings. In the Normal Receive & Flash Function mode, it is also possible to use the camera’s built-in flash or another flash unit as the Transmitter(TX).
* It can be used with other EF-630 and EF610 DG SUPER with different mounts.
Cameras with flash focal plane shutters cannot perform flash photography at shutter speeds faster than the fixed synchronization speed as it is usually limited to coincide with the fully open shutter.
The FP flash function makes flash photography possible at shutter speeds greater than the fixed synchronization speed. When the lens diaphragm is set to larger apertures to limit depth of field in synchronized daytime shooting, high shutter speeds can be used to balance the daylight and the flashlight at any shutter speed.
*This function is not available with some camera models.
When photographing a moving subject, the Rear-curtain Sync mode allows the flash to be triggered immediately before the rear-curtain of the shutter closes. Unlike Front-curtain Sync, this mode records blurred trails behind a moving subject rather than in front for a more natural expression of motion.
The EF-630 also offers a modeling flash function, enabling the user to check for reflections and shadows before taking a photograph.
When the notification beep sound is turned on by the switch at the front of the flash, it is possible to check the status of flash such as whether it is fully charged, exposure is ok, as well as error alert only by the sound without looking at the LCD display.
This flash is equipped with a built-in catch light panel, which can highlight the eyes of the subject when the bounce flash mode is activated.
The Custom Mode Function is available to register two settings with the photographer’s preference. It is easy to set it with D-Pad and dial on the side of the flashgun.
The EF-630 is equipped with a Synchronization Terminal to connect a camera with the commercially available synchronization cable.
The flash power level of the EF-630 can be set manually from 1/1 to 1/128 in 1/3 EV increments to meet the photographer’s needs.
To conserve battery life, the EF-630 will automatically turn off after a certain period of time of inactivity.
Photographers can update the firmware via the optional FD-11 USB Flash Dock (sold separately). The firmware can be updated by attaching the EF-630 to the FD-11 via a USB cable to a computer and using the free SIGMA Optimization Pro software.
Dimensions (diameter x height x length)
ø75.5 x 16.2 x 75.5mm
Canon | Nikon | Sigma
Clip-on type TTL Auto Zoom Flash with series control
Four AA Alkaline or Ni-MH (Nickel Metal Hydride) batteries
Automatically set in accordance with the focal length of the lens, in a range from 24mm to 200mm. Also covers the angle of a 17mm lens when used with the built-in Wide Panel.
Approximately 3 seconds (Alkaline batteries), Approximately 1.8 seconds (Ni-MH batteries)
Number of flashes
Approximately 120 times (Alkaline batteries), Approximately 185 times (Ni-MH batteries)
Approximately 1 / 700 seconds (Full Light)
Bounce angle (Up)
0, 45, 60, 75, 90 degrees
Bounce angle (Right)
0, 60, 75, 90, 120, 150, 180 degrees
Bounce angle (Left)
0, 60, 75, 90, 120, 150, 180 degrees
Bounce angle (Down)
0, 7 degrees