Having Trouble Understanding Something?
Take a look at some of the links, maybe they could help....
First You Must,
understand that all of these elements work together to create your exposure. If you have trouble understanding one of these elements it will affect what your doing and your picture will look over exposed and the clipping that you’ve created will make for a lesser experience later when editing.. Make sure you understand these processes first and you will have a smoother times doing so…
Check out this video The 3 Basics of Exposure & Photography by Matthew Gore
is a hole or an opening through which light travels.
Refers to the amount of light that enters the lens and hits the sensor
Controls the amount of time the shutter remains open while letting in light for the sensor