This speedlight lets you use TTL automatic exposure for shadow-free wraparound macro photography. Two built-in flash modules provide full-surround illumination, so you can flawlessly capture the details of the world in miniature without distracting shadows. This flexible unit lets you adjust the flash output to have either the right or left modules flash, or both together. In addition, the modeling flash mode lets you see what effect the flash will have on your scene through the viewfinder before you take the shot. A convenient focus illuminator ensures pinpoint focus adjustment and a wide illumination panel lets you shoot flash-to-subject distances closer than 40mm.