What is the difference between micro-single, SLR and card machine?

The difference between micro-single and SLR;

1, different conveniences; Because the anti-micro-single cancels the lens reflection framing system, its structure is simplified, making the fuselage thinner and more portable.

2. Different focal lengths; The thinner body shortens the distance from the focal length of the lens to the focal plane of the sensor, which leads to the increase of its equivalent focal length, usually twice the full-width equivalent focal length.

3. Different effects; The increase of equivalent focal length directly leads to the same large aperture of the lens. Under the same composition, the depth of field increases, that is, the effect of large aperture scene depth decreases, and the effect of blurring the background to highlight the main body cannot be achieved (relative).

Extended data:

In the single mirror reflection system, the unique design of the mirror and prism enables the photographer to directly observe the image seen through the lens from the viewfinder. After the light reaches the reflector through the lens, it is reflected to the focusing screen above to form an image. Through the eyepiece and pentaprism, we can see the scenery outside in the viewfinder.

When the shutter is pressed, the reflector will bounce up, and the shutter curtain in front of the film will be opened at the same time. The light (image) passing through the lens will be projected on the film to make the film sensitive, and then the reflector will immediately return to its original state, and the image can be seen in the viewfinder. This structure of the single-lens reflex camera ensures complete focusing through the lens, which can make the image seen in the observation window basically consistent with the image on the film.