What image is the object distance more than twice the focal length?

This kind of convex lens will present an inverted and reduced real image.

When the object distance is greater than twice the focal length, the convex lens will present an inverted and reduced real image. This principle is widely used in the manufacture of cameras. In a camera, the distance between the object and the lens (convex lens) is much larger than twice the focal length of the lens. The lens can shrink the object, present a clear inverted real image, record it on the photosensitive element of the camera, and finally form a photo.

This phenomenon is an important part of convex lens imaging law, which reveals the relationship among object distance, image distance and focal length, and how to jointly affect imaging properties. For photography enthusiasts or physics learners, understanding and mastering this law will help to better use and adjust the camera and obtain satisfactory shooting results.