Introduction to photography

Introduction to photography is as follows:

The larger the aperture (the smaller the number), the more light enters, and the brighter the photo will be; On the other hand, the large aperture has a shallower depth of field and the portrait background is more dreamy. The smaller the aperture (the larger the number), the less light enters and the darker the photo; With a small aperture, the background will be clearer, and taking pictures can ensure that all the pictures are captured.

The higher the shutter speed, the faster the action can be fixed and the solidified effect can be captured. The lower the shutter speed, the less clear the captured motion will be, and the subject will become hazy when exposed for a long time.

ISO sensitivity, low sensitivity is suitable for shooting in an environment with sufficient light source, and the picture noise will be less; Suitable for shooting with high sensitivity in an environment with insufficient light source, but the higher the sensitivity, the more noise there will be.

The longer the focal length of the focusing lens, the narrower the viewing angle, and vice versa. For example, the viewing angle of a 300mm telephoto lens is only 8, while the viewing angle of an 8mm super wide-angle lens is180.

Composition basis: When using the three-point method to compose a picture, the picture is divided into three parts with two vertical lines and horizontal lines, just like writing a "well" and putting the subject at four intersections, which is the most stable shooting position.

Composition basis: the diagonal line extending from the upper left corner to the lower right corner of the picture is sad and tense, which is suitable for strengthening the atmosphere, while the diagonal line extending from the lower left corner to the upper right corner is more dynamic and the picture is more powerful. The right middle position is suitable for calm and smooth performance.