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 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.Autozoom function for changing the illumination angleThis function delivers flash light by automatically setting the optimum illumination angle- in accordance with the lens' focal length- in a range from 24 mm to 105 mm. When used with the built-in Wide Panel- the flash can cover the angle of up to 17-mm ultra wideangle lens. ;Automatic TTL exposure controlAdvanced photographic techniques- such as diffused lighting photography with a diffuser attached to the flash head- or bounce photography with the light pointed at the ceiling or wall to soften the shadows cast on the subject without directly illuminating the subject with flash light- can be performed while the automatic exposure control function is preserved. Bounce flash function- with movable flash headThe flash head can be tilted up by up to 90 degrees - to the left by 180 degrees - or to the right by 90 degrees . 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 degrees- light can be effectively used even for close-up shots. ;-- Auto Power-Off function prevents wasted powerEven if the flash is left with the power on- it automatically shuts off if it is not operated for a certain length of time. This conserves battery power in flash photography. When the shutter button is depressed halfway- the power turns on again and charging resumes. Diverse- user-friendly functionsManual flash mode with two levels: Full power and 1/16 power. The display function indicates the completion of recharging and allows the TTL exposure control to be checked using the Ready light. The focal-length display shows the current focal-length setting of the zoom head. This flash features many other functions as well.