Since the camera produces an inverted image, why do we see an upright real image?

Because the camera automatically makes the image upright.

For traditional cameras, the inverted image is corrected into an upright image after re-refraction by a set of prisms. For today's digital cameras, it is possible to adjust the inverted image to an upright display through a digital circuit board.

The light enters the camera from the lens, and the CCD performs color filtering and photosensitivity, and decomposes the photographed object into pixels one by one according to a certain arrangement.

The pixels are transferred to the analog-to-digital converter in the form of analog image signals, converted into digital signals, sent to the image processor, processed into real images, and then compressed and stored in the storage medium. Finally Imaging.

Extended information:

Camera working principle:

From the perspective of completing the function of photography, a camera must have three major structural systems: imaging, exposure and auxiliary systems.

The lens is an optical system used for imaging, consisting of a series of optical lenses and lens barrels. Each lens has two characteristic data: focal length and relative aperture.

Cameras use the linear propagation properties of light and the laws of refraction and reflection of light, using photons as carriers, to transfer the amount of light information of the scene being photographed at a certain moment to the photosensitive material through the camera lens in the form of energy. Finally, it becomes a visible image.

The optical imaging system of the camera is designed according to the principles of geometric optics, and through the lens, the scene image is accurately focused on the image plane through the straight-line propagation, refraction or reflection of light.

When taking photography, it is necessary to control the appropriate exposure, that is, to control the appropriate amount of photons reaching the photosensitive material. Because the amount of photons received by the silver salt photosensitive material has a limited range, if the amount of photons is too small, latent image nuclei will not be formed, and if the amount of photons is too much, overexposure will occur, and the image cannot be distinguished.

The camera uses the aperture to change the light aperture of the lens to control the amount of photons reaching the photosensitive material per unit time. At the same time, it uses the opening and closing time of the shutter to control the length of the exposure time.

Baidu Encyclopedia—Camera