I just received a strobe as a present. I have a Canon A620 with the Canon housing so I will attach a fiberoptic cable in front of the flash to trigger the strobe. What I'm unclear about is what settings I need to make on the camera. I would think that the camera should be in manual mode with a fixed ISO setting but I'm unsure.

Do you shoot in full manual mode with a fixed iso and f stop and then adjust speed by trial and error to get the correct exposure or,
set camera into aperture priority mode, set iso and aperture and allow camera to adjust speed (would this work - there is no feedback to the strobe)?

So, please explain how to use the strobe since the manual is lacking any direction. If I need to set the f stop do I use the most open setting or the smallest or somewhere in between?

PS I have only three adjustments on the strobe, min, med, max power output.

(Message edited by sirto on May 12, 2008)

(Message edited by sirto on May 12, 2008)

What type of strobe? Your fiber optic sync cable will mimic whatever flash your camera puts out. Manual exposure is the way to go here! Fixed ISO at 100 and then use the f stop to determine the depth of field and the speed/strobe setting to control exposure. Or you can use the automatic settings on the camera to get used to it, and have some very good results. The smaller the f stop the greater depth of field. If you intend on going macro, that's the way to go. If you're taking reef shots just use the auto settings.