What do you mean by the number of shots?

The number of lenses refers to the focal length of the lens. The bigger the number, the more distant things you can photograph. For example, a lens of 100 mm can enlarge an object 50 meters away to the whole photo, while a lens of 70 mm can only enlarge it to half of the photo. A lens is a lens installed on a camera or projector and imaged on a film or screen.