What's the use of asking what a CCD is?

1.LCD size is the size of the camera screen.

2.ccd is similar to the old camera film, with many photosensitive elements on it. The bigger the size, the better. But now the general consumer cameras are 1/2.5 inches. The number of CCD pixels refers to the number of photosensitive elements on CCD. Theoretically, the more pixels on a CCD, the better. However, too dense pixels on CCD will also increase noise.

3. First of all, EV is the abbreviation of exposure value. Refers to the amount of light given to ccd by aperture value and shutter speed OEV: the original exposure value is the initial exposure. Press this button to return to the initial exposure state.

4. Focusing refers to rotating the focusing ring to make the photographed object image clear.

5. Metering mode Most digital cameras or traditional fool cameras have these metering modes: center average metering, center part metering, spot metering and evaluation metering. These photometry methods can basically cope with all the current shooting, but in the photo studio and some professional occasions or advertising shooting, photographers still rely on the value of the exposure instrument to shoot.

6. White balance is produced by the true color reproduction of electronic images. It was used in the field of professional photography earlier, and now it is also widely used in household electronic products (household cameras, digital cameras). In order to realize that the camera image can accurately reflect the color condition of the subject, there are manual white balance and automatic white balance, which literally means white balance. Then what is white? This involves some knowledge of chromatics. White refers to the visual response of light reflected to people's eyes because of the same proportion of blue, green and red light and a certain brightness. We all know that white light is made up of seven colors: red, orange, yellow, green, cyan, blue and purple, and these seven colors are made up of red, green and blue in different proportions. When the proportion of the three primary colors of a beam of light is the same, it is customarily called achromatic, and the light reflected by black, white, gray, gold and silver is achromatic. The public's understanding of white is brightness without color components. The white or other colors seen by human eyes are related to the inherent color of the object, the color temperature of the light source, the reflection or transmission characteristics of the object, the visual perception of human eyes and many other factors (please refer to the principles of chromatics). For a simple example, when colored light illuminates an achromatic object, the color of the reflected light of the object is the same as the color of the incident light, that is, the white object is red when illuminated by red light. When two or more colored lights illuminate the achromatic object at the same time, the colors of the object show additive effect. When colored light shines on a colored object, the color of the object decreases. For example, yellow objects appear red under magenta light, green under cyan light, and gray or black under blue light.

7.ISO sensitivity is a term often encountered in the camera field, indicating the sensitivity of film to light. ISO sensitivity is divided into 64, 100, 200, 400, 800, 1600 and so on. In traditional cameras, ISO is also called "spindle". For example, the ISO 100 movie is called: 100 main shaft. The higher the sensitivity, the more suitable for shooting in dim light. But at the same time, the vividness and authenticity of colors will also be affected. In the case of good light, the lower the sensitivity, the less noise and the more realistic the picture will be. In order to facilitate the understanding of digital camera users, digital camera manufacturers generally convert the CCD sensitivity (ISO sensitivity) of digital cameras into the sensitivity value of traditional films.

If you don't know how to use a camera, buy a broken camera. The parameters of the camera will be adjusted automatically. The effect is very good in good light. If you want to get good results in poor light, you can adjust the iso of the camera to 64 to extend the exposure time. But be sure to fix the camera with a tripod.