"What is E / I-TTL?"
TTL - “TROUGH THE LENS“ describes the automatic exposure control of modern camera systems. With digital cameras this is a highly complex operation. Camera and flash communicate according to a precisely laid out “protocol” and calculate out of a range of components the respective amount of light which is emitted by the flash in a matter of seconds. We have managed to adequately and perfectly decipher and translate this protocol for the digital flash devices from our own production. All data is programmed on to a micro processor and controls the entire communication between camera and flash device.