More Odd Photography Terms Explained - What Is A Mirrorless Camera?

A mirrorless camera has a sensor that is permanently exposed to light. When taking a photo a shutter covers the sensor and then opens and closes to expose the image for a time duration set by the shutter speed. The viewfinder on a mirrorless camera is electronic. Mirrorless cameras do not have mirrors or the pentaprism found on DSLR cameras so are smaller and lighter.