I understand it like this: An auto flash will have its own built-in quench circuit. As long as you follow the ISO/aperture/distance guide, you're okay.
TTL relies on the camera to quench the flash, and if the camera can't get it right, then... t On 11/8/04 14:06, David Zaninovic wrote: >> I have given up on using the istD with TTL flash. >> It is totally useless in this regard. > > Shouldn't the TTL flash be more precise than auto flash ? > > >
