"In researching flash for digital cameras for wedding use, including on
PDML, I find references to how the pre-flash used in almost all brands
of digital TTL makes people more likely to blink during the main flash
of the final exposure."
Brian, the duration between the pre-flash and the flash is very short --
microseconds. If you are looking through the viewfinder you won't notice it.
But perhaps there is a category of humanity that we should label "speedy
blinkers." I don't know.
I believe Bruce Dayton has been using the AF 400T for wedding
photography, with some exposure compensation. It's a great flash.
Do you have a D or DS? I seem to recall reading somewhere that TTL was
implemented for the D but not for the DS or DL.
Joe