>>3533002My god. Read what you have written.
Shutter speed affects shutter speed.
Aperture affects aperture.
You control "exposure" by managing your variables. ISO, shutter speed, aperture, ambient light, strobe light, ect. ect
The best advice is to RTFM for your camera, strobe, and film. The test, test, test until you know what works with your equipment in the environment your shooting in. FML.