wiltw
03-04-2010, 04:00 PM
Your flash has a meter built into it. The thyristor reads the light reflected off the subject (closest object) and cuts out the flash pulse when enough light has reached the camera. With the correct ISO and aperture dialed into the flash unit, of course. So TTL doesn't enter into it.
Your flash has a meter built into it. The photosensor reads the light reflected off the subject (closest object) and the thyristor cuts out the flash pulse when enough light has reached the camera and diverts the excess charge back to the power capacitor to recycle the unused energy and shorten recycle time. With the correct ISO and aperture dialed into the flash unit, of course. So TTL doesn't enter into it.
Your flash has a meter built into it. The photosensor reads the light reflected off the subject (closest object) and the thyristor cuts out the flash pulse when enough light has reached the camera and diverts the excess charge back to the power capacitor to recycle the unused energy and shorten recycle time. With the correct ISO and aperture dialed into the flash unit, of course. So TTL doesn't enter into it.