Single-lens digital camera, mirrorless single-lens camera and SLR camera are all abbreviations.

SLR is the abbreviation of single lens reflex camera. Its meaning is that one lens is used for light collection, metering, distance measurement, and framing of images.

Single-lens electronic viewfinder camera is the abbreviation of single-lens electronic viewfinder camera. It means that the light collection, metering and distance measurement of the image use one lens, and the viewfinder method uses an electronic display screen. The power consumption of this kind of camera is relatively large compared to that of a SLR.

Micro-Single is the abbreviation of micro-single-lens digital camera. It is only different from a single-lens camera or SLR in the body. It has many functions for taking pictures, and the lens is specially designed and produced for this kind of camera. .

Compared with SLRs and DSLRs, the photoreceptor of a mirrorless camera is not small, and there are also APS-C sized ones. Therefore, it is almost the same as a DSLR. But there are full-frame SLRs, but there are no full-frame SLRs and micro-cameras. In comparison: SLRs consume less power, while single-camera and mirrorless cameras consume slightly more power.

SLRs and DSLRs have similar appearances. The difference is that SLRs have a mechanical shutter, and the shutter life is not as long as that of DSLRs. DSLRs use electronic viewfinders, and there will be varying degrees of delay in viewfinding.

The principle of mirrorless single-lens cameras is similar to that of single-unit cameras. Most mirrorless single-lens cameras do not have a viewfinder and can only view the view through the screen. This also contributes to the portability of mirrorless single-lens cameras.