Nikon S with D90 file, speed priority is the shutter speed manual settings, automatic adjustment of the aperture camera. If shoot photos is black. The reasons are the following several points:
1, your shutter speed is too fast, maximum aperture is less exposed, photo is black;
2, IOS is sensitive to light setting is too low, camera less exposed, photo is black;
3, flash manual ejection, camera less exposed, photo is black.