What are the key differences between a 10mm and a 22mm Canon lens?

The key differences between a 10mm and a 22mm Canon lens are the focal length and field of view. The 10mm lens has a wider field of view, capturing more in the frame, while the 22mm lens has a narrower field of view, ideal for capturing subjects from a distance. Additionally, the 10mm lens may have a shallower depth of field compared to the 22mm lens, resulting in different levels of background blur in photos.