What is the purpose of photography?

Turn ordinary things that are fleeting in daily life into immortal visual images and retain beauty.

The word photography comes from the Greek word φ? Phos (light) and γ ρ α φ ι graphics (painting, painting) or γ ρ α φ? Graphê together means "painting with light". Photography refers to the process of recording images with some special equipment. Generally, we take photos with mechanical cameras or digital cameras. Sometimes photography is also called photography, that is, the process of exposing a photosensitive medium by using the light emitted or reflected by an object.

Equipment required for photography:

Generally speaking, people take pictures with visible light, and cameras are the most commonly used. Because of different scenes and uses, cameras have many classifications. Generally speaking, a camera must have several basic components to ensure the exposure process, including: photosensitive medium, imaging lens, exposure time control mechanism, film cassette, storage medium, electronic photoreceptor and electronic storage medium.

Extended data:

The history of photography:

1842 On May 5, a fire broke out in Hamburg, Germany, which lasted for four days. Biou and Stelzner went to the fire and took many photos of the ruins, but most of them were separated, only one remained. This shoot and this photo are recognized as the first news photo activity and the first news photo in the world today.

The birth of photography came into being with the development of European capitalism. /kloc-in the past 50 years, it has experienced the process from simple to complex, from low speed to high speed, from manual to automation. But it has never changed, and it is always inseparable from the traditional mode of camera and film, which has been passed down from generation to generation until today.

The birth of digital photography poses a severe challenge to traditional photography, forcing us to understand digital cameras from scratch. A digital camera is composed of countless zeros and 65438+ zeros arranged together in a computer or electronic device.

Digital camera is a kind of camera which uses electronic components (usually CCD or CMOS) instead of film as photosensitive material, and digitally stores the images recorded by the subject in a memory card that can be reused many times. Leave the rest to the computer (the so-called "electronic darkroom"). ?

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