1 2 megapixel camera124-bit true color photo. How much space does it take?

This is not determined by numbers, but mainly depends on the storage format and fineness, as well as the scenery taken. Generally speaking, JPG is about 3-5 megabytes, and RAW is 15-20 megabytes.

A lens with a focal length of 50 mm is also called a standard lens, because its viewing angle of about 39 degrees on the Quan Huafu is equivalent to that of human eyes. It is said that the lens is the photographer's third eye, and the world seen through the 50 mm lens can truly restore the atmosphere at that time; Wide-angle lens, in short, is a lens with short focal length, wide viewing angle and deep scene. The basic characteristics of wide-angle lens are that the lens has a large viewing angle and a wide field of view, and the range of scenery observed from a certain viewpoint is much larger than that seen by human eyes at the same viewpoint, and the depth of field is long; A telephoto lens can ignore redundant pictures and highlight the main body. The telephoto lens has a relatively narrow viewing angle and can focus on the subject or portrait, so it can avoid unnecessary factors and make the subject of the photo more concentrated.

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.

The most common camera takes images of visible light, but not all cameras need visible light (such as infrared thermal imager), and some even don't need traditional light source (such as scanning tunneling microscope). In modern social life, many devices have the characteristics of cameras, such as radar, medical imaging equipment, astronomical observation equipment and so on. The earliest camera structure was very simple, including only a black box, a lens and photosensitive materials. Modern cameras are complex, including lens, aperture, shutter, ranging, framing, photometry, film transmission, counting, self-timer, focusing, zooming and other systems. It is a complex product integrating optics, precision machinery, electronic technology and chemistry.