The EF-500 Super DG is Sigma's flagship TTL flash , and has now been updated to also be fully compatible with Digital SLR cameras that use a pre-flash, and supports full Nikon i-TTL flash 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.
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
Autofocus auxiliary lamp helps the camera to focus in low-light situations
Red-eye reduction function
Features an Illuminated LCD panel
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 100Hz
High-speed sync & wireless TTL features are supported when used with applicable cameras
Incorporates "modeling flash" mode to provide proper light distribution to check the shadow of the subject
Battery-saving mode shuts down power after 80 seconds