Sometimes I shoot macro photos with a Nissin clip on flash. I would like to use aperture priority for depth of field but set the shutter speed at 1/160 sync. I can't figure out how to do that. When I've done it in the past, I'm not sure how the camera selected the shutter speed---sometimes it seemsed like it metered ambient light, sometimes it seemed to be correlated to focal length I was using. Because of the magnification of macro, obviously, I don't want ghost images, so the fastest sync would be best. With my Olympus cameras I think I set those limits and forgot them. I can't seem to find how to do it with Panasonic. Anybody know? Thanks in advance!