Not sure why anybody would prefer the 'flow' setting over 'opacity'.
It just seems to make the result blobby.
( ,
Sat 17 Jul 2004, 3:11,
archived)
opacity refers to the total amount that can be drawn in one stroke
if it's set to 50% for example, no matter how long you hold down the airbrush, you will only achieve 50% coverage :) (i never use it that way, in fact i've gone back to PS6 because it has a better airbrush)
( ,
Sat 17 Jul 2004, 3:15,
archived)