DSLR Full Form is a Digital Single-Lens Reflex camera. It is a digital camera that functions based on combining the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor. A single-lens reflex camera is one that uses a mirror and prism system that enables the photographer to view the picture through the lens and capture it.
In the reflex design, light travels through the lens and then to a mirror that intends to send the image to the viewfinder. The single-lens helps the viewfinder present an image that will be the same as the image captured by the camera’s sensor.