Quote Originally Posted by Vincent Grafhorst View Post
Nice image Artie. Looking at your settings I would have thought this would turn out completely over exposed, even with high sync. What was your Aperture and SS, did you use aperture priority or manual mode? Maybe a silly question but what is the advantage of using manual flash in this case? Isn't it more controllable to use ETTL (with a higher output)? Thanks.
1/2500 at f/4. (I was sure that I posted that...) I was in Av mode for this image. The advantage of using manual flash at 1:1 as I understand it is that the flash is putting out full power. At 1/2500 sec. the flash needs to fire three times (with High Speed Synch). Thus, as above, flash output (and therefore its range) is drastically reduced. This technique really works well on sunny days. In dull conditions I often use the flash in ETTL at -1 or zero and shutter speeds from 1/500 to 1/1250 sec., but here I wanted a really fast shutter speed as the boat was rocking.