What are the introductory tutorials for SLR cameras?

The introduction course of SLR camera includes the working principle of camera, the basic holding method of camera, and the relationship between aperture shutter and sensitivity.

1 First of all, understand what a SLR camera is and how it works:

A single-lens reflex viewfinder camera is also called a SLR camera. It refers to a camera that uses a single lens through which light shines on the mirror. One of the biggest features of SLR cameras is the reflector. After the light reaches the reflector through the lens, it is reflected on the focusing screen above to form an image. Through the eyepiece and pentaprism, we can see the scenery outside in the observation window.

2, master the basic method of SLR camera:

The correct holding method of SLR camera helps to take clearer photos. Although the camera basically has anti-shake function now, it is still necessary to ensure that the posture does not shake. The basic hand-held camera posture is like this: the left hand is placed under the lens, the finger is attached to the lens, the palm holds the fuselage, and the left arm and elbow are lightly attached to the body to form a triangle.

3, understand the aperture:

The aperture is usually located in the center of the lens. It is a circular ring, which can control the opening size of the circular hole and the brightness of light during exposure. When a lot of light exposure is needed, the circular hole of the aperture is enlarged; If only a small amount of light is needed for exposure, the circular hole will be narrowed to allow a small amount of light to enter. Aperture acts like a frog in our eyes. Used to control the amount of light per unit time when shooting, generally marked with F/5, F5 or 1: 5.

4, understand the camera shutter:

The shutter is a mechanical device in the camera. By controlling the opening and closing speed of the shutter, the length of time for the film to receive light is determined. That is to say, in each shooting, the size of the aperture controls the amount of light entering, and the speed of the shutter determines the length of light entering time, so that an action completes what we call exposure. Each digital unit above is the denominator, that is to say, each shutter segment is: 1 sec,1/sec,1/sec,1/sec,1sec and/kloc-0.

5, understand the sensitivity of the camera:

The sensitivity of SLR camera is an index similar to film. ISO of SLR cameras is realized by adjusting the sensitivity of photosensitive devices or merging photosensitive points, that is, by improving the sensitivity of photosensitive devices or merging several adjacent photosensitive points.