I just bought a radio trigger for my flash. I was just wondering if I understood TTL correctly, as I move the flash around and changes the distance does TTL automatically try to compensate (assuming it has the power to do so)?
Likewise, does it automatically adjust the flash exposure as I turn the head? If I tried to bounce the flash to the wall behind me, it will try to compensate and keep the exposure constant? Granted, the direction of the light will be different but the camera will at least keep the exposure constant based on the 18% rule?