Terminology of digital camera

Wide angle refers to a lens with a focal length of less than 55MM, which simply means that the left and right viewing angles of the photos can be wider.

SLR refers to a SLR optical digital camera, which is a professional digital camera: 1 You can change lenses with it. The special prism combination makes the scene shot by the viewfinder (explained later) very accurate, that is, what you see is what you get.

A telephoto lens is only a lens with a focal length greater than 55MM, that is, it can illuminate things farther away.

Sensitivity is also called ISO (meaning not much, but it doesn't have much effect). Just remember that the higher the value after ISO, the shorter the exposure time (brighter the picture), but there will be more noise, which will affect the imaging.

"hot boots" broadly refers to the special slot interface on the top of the fuselage for connecting flash, camera light and various functional microphones (mono, dual channel, zoom, quad stereo, etc.). ). In the slot, there are power connectors for these temporary external devices to work normally and interfaces for audio signal input. Most of these interfaces are designed to be hidden in slots, and some have hot shoe covers. There are two parallel metal grooves on the surface of the hot shoe for clamping.

Compared with professional SLR cameras, consumer digital cameras can be considered as "cameras used by ordinary consumers", which is often called "fool cameras", or DC for short. The lens cannot be replaced, and the CCD area is small. Our common cameras in the market are basically consumer-grade digital cameras, and their functions are mainly used for our daily shooting, tourism shooting or amateur shooting as souvenirs. Its structure, function and cost are mainly oriented to ordinary consumers.

The main difference between it and professional cameras lies in the difference in the purpose of use and the crowd. Professional cameras are aimed at professional photographers and senior photographers, and the construction cost of these cameras is much higher than that of ordinary consumer cameras.

In the case of good light, consumer digital cameras use low sensitivity, which can basically meet the needs of ordinary families. In addition to a short delay in shooting, their images have been processed according to people's appreciation habits during the preservation process, so some details are lost, which is not conducive to reprocessing. In the case of poor light, if the camera uses high sensitivity, the photo will be very poor. Using consumer digital cameras is called photography, and using professional SLR cameras is called photography.

The viewfinder refers to the LCD screen or eyepiece (where the camera was not used before).