The EF-530 Super DG is Sigma's flagship TTL flash, and has been updated with improved coverage range and a stronger power output. It features a powerful Guide Number of 174'/53 m at 105mm, and covers a focal range from 24mm to 105mm.
The EF-530 Super DG is also fully compatible with the latest digital SLR cameras that use a pre-flash, and supports full P-TTL operation (where supported by camera). You will find features designed for the professional, at a much more attractive price than the comparably equipped manufacturer's flashes. The perfect all-around flash for any digital or 35mm autofocus SLR shooter.
TTL Wireless Flash Function
TTL wireless flash function allows the flash to be positioned and operated from a location away from the camera. A Pentax D-SLR can utilize an EF-530 DG Super mounted on the camera hotshoe for triggering single or multiple EF-530 DG Super units located away from the camera.
Slave Flash
Allows the flash to be triggered by the camera's built-in flash or another flash (Flash Exposure must be adjusted manually)
Bounce & Swivel Head
Flash can be tilted 90° upwards and 7° downward for close-ups. Also can be swiveled 180° to the left and 90° to the right
AF Assist
Autofocus auxiliary lamp helps the camera to focus in low-light situations
LCD Display
Features an illuminated LCD panel
Strobe Effect
The "multi pulse" features enable reduced power setting from 1/4 to 1/64, and the pulse frequency of the flash can be set from 1Hz to 199Hz
High-speed Sync
High-speed sync feature is are supported when used with applicable cameras
Modeling Light
Incorporates "modeling flash" mode to provide proper light distribution to check the shadow of the subject
Auto Power Off
Battery-saving mode shuts down power after 90 seconds