Would you like to broaden your world of photographic expression by manipulating light in a simple way. The EF-530 DG ST is an easy-to-use flash that provides a large amount of light, featuring a guide number of up to 53/m (174/ft) w/ISO 100. Compatible with AF single-lens reflex cameras of all popular manufacturers. this flash unit allows fully automatic photography with automatic TTL exposure control. In addition to the automatic mode, it also provides two power levels in manual mode: full and 1/16 power. This electronic flash combines a wide array of functions with ease of handling, and includes an Autozoom function that automatically sets the optimum illumination angle between 24mm and 105mm, as well as offering bounce and swivel capability.