key concept Make sens e of man ual
Manual exposure sounds complex, but it’s actually rather simple
Your Nikon D-SLR uses three key exposure settings: shutter speed, lens aperture and ISO (sensitivity), and the settings have been designed in a very clever way – you can balance one against another. If you want to use a faster shutter speed, you can increase the lens aperture setting. This allows more light through to compensate for the shorter exposure. Alternatively, if the light is too dim for the shutter speed you want to use, and you’re already using the lens’s maximum aperture, you can increase the ISO setting to compensate for the dimmer light.