Let’s take it as an entry-level SLR. The entry-level SLR is also quite small, which is not very different from a mirrorless camera.

The main reason is that entry-level SLRs are cheaper than mirrorless cameras.

Mirrorless cameras are a cross-border product between digital SLR cameras and card cameras. The most important feature of their structure is that they do not have reflectors and prisms. "Mirrorless" is a trademark of Sony Corporation. In June 2010, Sony launched the first "mirrorless" cameras NEX-5 and NEX-3.

"Mirrorless" cameras have the characteristics of combining portability, professionalism and fashion. The customer groups targeted by mirrorless cameras are mainly those who want to obtain very good picture performance on the one hand, and on the other hand Target customers who want the portability of a compact digital camera.

Single Lens Reflex Camera, also known as SLR camera.

It refers to a camera that uses a single lens, and the light shines on the reflector through this lens, and the view is taken through the reflection. The so-called "single lens" means that the photographic exposure light path and the viewing light path use one lens. It is not like a rangefinder camera or a twin-lens reflex camera that has an independent lens for the viewing light path. "Reflection" refers to a flat reflector in the camera that separates the two light paths: the reflector falls down when viewing the view, reflecting the light from the lens to the pentaprism and then to the viewfinder window; the reflector quickly lifts up when shooting, so that the light can shine on the film Or on the photosensitive element CMOS or CCD.