What is the definition of photography?

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. Someone once said an incisive language: the photographer's ability is to transform the fleeting ordinary things in daily life into immortal visual images.

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".

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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.

When taking pictures, light enters the cassette through a small hole (more often, a lens group) and forms an image on the medium on the back of the cassette (relative to the incident direction of light). According to the actual light intensity and the photosensitive ability of the medium, the required light time is also different. In the process of illumination, the medium is irradiated by light.

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