> This talks about four flash types: FP, M, MF and Speedlight, but I don?t > know wich one of those categories are the bowens studio flashes I?m using. You should use the speedlight or X setting > I thought that for Nikon F2 the synch. Speed for flashes are those from 1/80 > (The red vertical line in the shutter speed knob) and slowers ... exactly If in doubt take the lens off and place a piece of white paper in the focal plane of the camera and holding the flash close to the camera and pointing the camera at the flash look at the paper from the back of the camera. If you see a full rectangular shape show up then all is well. If only a partial focal frame is seen then either you are using too short an exposure time or the wrong sync setting - but I'd say the former. Incorrect sync setting will most probably result in blank frames! andy