A digital image sensor is what makes a mirrorless camera a digital camera. In contrast to DSLRs, Mirrorless cameras dispense with the mirror and optical viewfinder altogether. They don't use a traditional viewfinder but an electronic viewfinder (EVF) or LCD screen to frame their photos. This layout permits a smaller and lighter camera body. Nonetheless, it has the potential to provide benefits in terms of focusing speed and picture quality. To further resemble a DSLR, some best mirrorless cameras also support interchangeable lenses.