Traditional Culture Encyclopedia - Photography and portraiture - Physical knowledge contained in physical photography

Physical knowledge contained in physical photography

There are many others, such as:

A convex lens can be inverted into a miniature real image. (camera)

The convex lens can form an inverted magnified real image. (projector, slide projector)

A convex lens can form an upright magnified virtual image. (magnifying glass)

There are also plane mirror imaging and concave lens imaging.