Mirrorless, in short, is a micro SLR. Sony uses "mirrorless" cameras on compact, interchangeable lens digital cameras. Sony positions the "mirrorless" camera as a cross-border product between a digital SLR camera and a card camera. Its most important structural feature is that it does not have a reflector or prism. "Micro-Single" is a trademark of Sony Corporation.

Mirrorless is a name given by Sony and is only used in China. It is actually a single camera. Single camera is also a new term. As the name suggests, it refers to a camera that uses a mirrorless design, an electronic viewfinder (EVF) and has digital SLR functions (such as interchangeable lenses, fast phase detection autofocus, larger image sensor size, etc.) . The biggest difference from a SLR is that there are no reflectors and mirrors.

To put it simply, mirrorless cameras are several times better than card cameras. But there is still a gap with SLR. Sony and Nikon mirrorless cameras are more popular on the market.