How to choose A7M3, A7R3, A7C A7C cameras?

The main photo suggested shooting a7r3(a7r3a).

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. This is an optical instrument used for photography. In modern social life, there are many devices that can record images, all of which have the characteristics of cameras, such as medical imaging equipment and astronomical observation equipment.

After the light reflected by the shot scene is focused by the camera lens and the shutter that controls the exposure, the shot scene forms a latent image on the photosensitive material in the camera box, and forms a permanent image after being developed and fixed. This technology is called photography, which is divided into general photography and professional photography. 2065438+In September 2008, the Harmonized System Committee of the World Customs Organization classified UAVs as "flying cameras".

There are many kinds of cameras, which can be divided into landscape cameras, printing and plate-making cameras, document microfilm cameras, microscopic cameras, underwater cameras, aerial cameras, high-speed cameras and so on.

According to the size of photographic film, it can be divided into 1 10 camera (picture 13× 17mm), 126 camera (picture 28× 28mm) and 135 camera (picture 24×/kloc).