What is mirrorless cameras?

Mirrorless cameras are a type of digital camera that, unlike DSLRs, do not use a mirror to reflect light from the lens to the viewfinder. Instead, light passes directly through the lens onto the image sensor, which displays the image on the camera's rear screen or electronic viewfinder (EVF). They are commonly used by both amateur and professional photographers due to their smaller size and weight compared to DSLRs, while often offering similar or superior image quality and advanced features like fast autofocus and 4K video recording.