CONTROLLING FLASH AND AMBIENT

The rule:  Shutter speed controls Ambient light, f/stop or aperture controls flash. This can be difficult to understand, but is really quite simple.  The shutter speeds on your camera controls the length of time that light is allowed to expose the picture.  F/stop or aperture only controls the amount of light that exposes your picture. The content you are trying to access is only available to members. Sorry.