What is a “field of view” crop on a digital camera? What difference does it make if your camera is full frame, or has a field of view crop? It makes a BIG difference, so I just updated my illustrated article on the digital field of view crop. It will help you understand how to work with your lenses and how to chose lenses that will work best with your camera (and a warning about lenses that won’t work with, or could even damage some cameras).
It would also help if you read the illustrated article on focal length and lenses. It will give you an idea what different focal lengths look like on both full frame cameras and cameras with a digital field of view crop.
Camera sensors with a field of view crop will also change depth of field. You can learn more in these four articles: