What are the three basic knowledge of photography?

Three basic knowledge of photography: the choice of focus, the use of light and the use of focal length.

1, the choice of focus.

The quality of the portrait depends on whether there is a god in his eyes. If a person blocks his eyes or only leaves his back, it must be an incomplete portrait. Similarly, if you don't convey the charm of the characters' eyes when shooting a portrait, then the whole portrait is dim. Confirm where the focus falls when confirming the shutter.

2, the use of light.

Pay attention to the introduction of light when taking portraits. Different light will also get different photo effects, some of which can be compensated by PS, and some omissions caused by light can not be compensated by retouching software. In the case of smooth light, people can use uniform light to deal with some details of the face and better restore the change of skin color. The disadvantage is that it will make the characters' faces darker and the facial features slightly stereoscopic.

3. The use of cola.

Shooting portraits with different focal lengths will have different effects. 25mm is suitable for shooting full-length portraits, and can also record the scenery around the portraits. 50mm focal length is more suitable for shooting busts or close-ups of faces, which can create a three-dimensional face and is very suitable for middle-distance shooting. 85mm is the most suitable focal length for portrait shooting, which can bring a suitable description of the character's environment, realize the blur effect and easily shoot the finished art.