What is a camera?

A camera is a general term for instruments with the function of imaging through a lens. Ordinary cameras that take a single photo are called ordinary photography (still life photography) cameras, which are different from movie cameras or TV cameras.

The camera consists of four parts:

1, imaging lens;

2. A shutter that gives the photosensitive material an appropriate amount of light;

3. Determine the shooting range of the frame;

4. A camera body as a container for photosensitive materials and a black box for receiving light at the focal plane. Cameras must be made from the aspects of shape, weight and details of each moving part. Even if it is a scale number, it should be easy to read and understand. Only for the sake of users can we produce a truly excellent camera.

The types of cameras can be roughly divided into:

(1) 35mm camera.

(2)35 mm single lens reflex camera.

(3)35 mm rangefinder linkage and lens exchange camera.

(4)35 mm half camera.

(5) Pocket cameras (1 10 cameras) and 126 cameras (1 10 and 126 cameras are cassette cameras).

(6) Medium-sized single-lens reflex cameras (dimensions are 6×4.5, 6×6 and 6×7 cm).

(7) medium-sized rangefinder linkage camera (6×7, 6×9 cm size).

(8) Large camera (4×5, 5×7, 8× 10 inch).

(9) Miniature camera (active and small).

(10) Polaroid camera.

(1 1) disk camera.

(12) Other special cameras.

In China, 35mm camera is commonly known as 135 camera; Medium-sized cameras are commonly known as 120 cameras.