The Canon EOS Rebel SL3 is a compact DSLR offering a 24.1MP sensor ... DSLRs use a mirror to reflect light into an optical viewfinder, allowing you to see what the camera sees in real-time.

Finally, reflex references the system where a mirror shoots the incoming light into the optical viewfinder. In general, the image above perfectly demonstrates the internal mechanisms of a DSLR camera.

Its EOS R camera system drops an optical viewfinder for an EVF and works with an all new lens system. The upgrade is worth it. Canon's second-generation EOS R5 and R6 offer much smarter autofocus ...