AF/TTL Operation
AF - AUTO FOCUS
If the camera is compatible with an external AF mode, when the shutter button is pressed half way down, the focus assist light is automatically activated to help the camera focus properly when the subject is in darkness.
TTL
The flash performs pre-flashes for cameras to calculate the intensity of flash light output. Therefore the flash light output is controlled automatically.
-For Nikon D40 & D40x owners: The flash can support an ISO speed up to 800 in full auto mode. It may not perform as expected if the ISO speed exceeds the supported range.
Red-Eye Reduction (Type NIK, OLY, PANA and PEN)
The red-eye reduction function reduces any red-eye problems by emitting pre-flashes before the main flash. To setup this function, please refer to your camera’s instruction manual.
