Why does the camera become a miniature, inverted real image?

The inverted real image is a kind of convex lens imaging.

Convex lens imaging: V is the distance, U is the object distance, F is the focal length, and 2f is twice the focal length. When u > 2f, f < v < 2f is inverted and reduced, which is used for cameras. When f < u < 2f, v > 2f becomes an inverted magnified real image for slide projector, when U=2f, U=V=2f becomes an inverted real image for measuring focal length, when u < f becomes a virtual image of a regular cube, it is used for magnifying glass, and when U=F does not image.

A camera is a kind of equipment that uses the principle of optical imaging to form an image and records the image with a negative. It is an optical instrument for photography, which consists of lens, viewfinder, fuselage and other parts.

Extended data:

Traditional camera imaging process:

1. The lens focuses the scene image on the film.

2. The photosensitizer on the chip will change with the light.

3. The changed photosensitive agent on the film is developed and fixed by the developer to form an image that is opposite to the scene or complementary in color.

Digital camera imaging process:

1. The light passing through the lens is focused on CCD or CMOS.

2.CCD or CMOS converts light into electrical signals.

3. Processed by the processor and recorded in the memory of the camera.

4, through computer processing and electro-optical conversion of the display, or printer printing, forming an image.