A perfect exposure captures the right amount of light without losing detail in the highlights or shadows.
So how do we control exposure? It all comes down to a combination of two basic camera settings – aperture diameter and shutter speed. Let’s examine each in turn.
Shutter speed is simply a measure of how long the camera’s shutter is open for. It typically ranges from anywhere around 1/1000th of a second (a fast shutter speed or short exposure time) to several seconds (a slow shutter speed or long exposure time).
Choose a shutter speed that allows you to capture enough light without blurring the subject.
Obviously, the longer the shutter is open for, the more light reaches the camera’s sensor, and vice versa.