People with disability require different skills in photography. They search for cameras, preferably compact digital cameras, which they can operate independently. For instance, a quadriplegic, spinal injury patient who has neither finger nor wrist movement is able to hold the camera up and look through the viewfinder but cannot press the shutter release button. In the past, a Ricoh film camera was used with the timer function. The timer switch was a little slider button that was raised above the body of the camera and could be clicked on even with the use of teeth. Once it was triggered, there was a 10 second delay and the camera took the shot automatically.
Today, the Ricoh film camera is replaced by a more technologically advanced digital camera for use by disabled. Among those, the SLR (Single-Lens Reflex) camera or DSLR (Digital Single-Lens Reflex) cameras are the best choices. These cameras use a movable mirror placed between the lens and the film to project the image seen through the lens to a matte focusing screen