Single-lens reflex camera viewfinder, (Single Lens Reflex Camera, abbreviated as SLR camera) also known as SLR cameras. It is through this lens single-lens reflex viewfinder of the camera. The so-called “single lens” means a photographic light path and optical viewfinder share a shot, unlike rangefinder camera or dual camera optical viewfinder as an independent lens.
“Reflective” means a plane mirror camera will separate the two optical paths: the framing mirror to fall, the lens of the light reflected into the pentaprism, to the viewfinder; when shooting fast lift mirror, the light may be irradiated to the film or photosensitive element CMOS or CCD.
