What are the basic knowledge of SLR photography?

The larger the aperture (the smaller the value), the more exposure, the brighter the picture and the blurred background, which is suitable for shooting people.

The smaller the aperture (the larger the value), the lower the exposure, the darker the picture and the clearer the background, which is suitable for landscape photography.

2. Shutter speed

The faster the shutter speed, the shorter the exposure time, the less light input and the darker the picture, which is suitable for shooting sports.

The slower the shutter speed, the longer the exposure time, the more light entering and the brighter the picture, which is suitable for shooting still life.

3, sensitivity ISO

The higher the sensitivity, the more sensitive the photosensitive element, the more exposure, the brighter the picture, the more noise, and the image quality is damaged.

The lower the sensitivity, the less sensitive the photosensitive element, the less exposure, the darker the picture, the less noise and the better the image quality.

4. Focal length and viewing angle

The longer the focal length, the narrower the shooting angle, which can zoom in and enlarge the subject and blur the background.

The shorter the focal length, the wider the shooting angle, and more objects can be shot with clear background.

5. Trigonometric composition

The picture is divided into nine areas by two vertical lines. When shooting, you can put the subject on two vertical lines for composition, and the best composition position is the four intersections of horizontal lines and vertical lines. Triangular composition is a very useful composition method.

6. Camera shooting mode

Automatic mode: The camera controls all parameters.

Program automatic P-file: the camera automatically sets parameters and controls the brightness artificially through exposure compensation.

Aperture priority A/AV file: Aperture is controlled manually, and shutter speed and sensitivity are controlled by camera.

Shutter priority S/TV file: shutter speed is controlled manually, and aperture sensitivity is controlled by camera.

Manual mode M file: exposure parameters are set manually.