Shutter speed
Shutter speed-the amount of time the shutter is open, A camera's shutter determines when the camera sensor will be open or closed to incoming light from the camera lens. The shutter speed specifically refers to how long this light is permitted to enter the camera. the faster shutter speed means a shorter exposure time.
Aperture
Aperture-the size of the opening in the lens when a picture is taken. A camera's aperture setting controls the area over which light can pass through your camera lens.It also determines a photo's depth of field(the range of distance over which objects appear in sharp focus).
ISO
ISO-the measure of a digital camera sensor's sensitivity to light.It increases or decreases the exposure depends on how much exposure 100, 200, 400 and 800 depends on your camera. However the higher the value of the ISO it also increases image noise.
