Aperture is a small set of blades in the camera lens that controls how much light will enter the camera for a photo.
Aperture sizes are measured by f-stops.
Smaller f-stop means there is a larger hole, brighter exposure and a shallow depth of field.
Depth of field means how much of the photo will be in focus.
A larger f-stop will have a smaller hole, darker exposure and large depth of field.
Learn more about aperture here.
Photo via: Pinterest!
Life Looking Through A Lense 