FLASH IN THE PAN
E-TTL II flash metering
Use this automatic option to create balanced flash
There are two flash basic flash metering modes: E-TTL (Evaluative Through-The-
Lens) and Manual. But E-TTL can hardly be described as basic… In this mode, the camera will automatically work out the flash exposure for you. To do this, the camera fires a low-powered preflash before the shot is taken, and the light reflected from the subject through the lens is evaluated.