Topic summary
Mirrorless
Extracted from the Wikipedia article Mirrorless camera.
Mirrorless cameras have become the most popular kind of interchangeable lens camera in both professional and amateur use, surpassing DSLRs, which use a mirror system. Lacking mirrors allows mirrorless cameras to be smaller, lighter, and quieter than equivalent DSLRs, but may decrease battery life because of the need to constantly power the sensor and electronic viewfinder (EVF) during use.