Sharboneus, E. (2014, May 16). Photography Masterclass PDF Review [DSLR camera shooting skills]. Retrieved September 16, 2015, from (http://vinamy.com/photography-masterclass/)
A single lens reflex camera essentially takes light and focuses it on an object or scene (Sandler & Ellis, 2009). When you press the button to open the lens, the aperture at the front of the camera opens and allows the light in. Light rays travel through the camera lens towards the back of the camera. The diaphragm controls the aperture and the shutter controls the length of time the light is let in for (Sandler & Ellis, 2009). When the object is farther away from the focal point the image appears smaller and when the object is closer to the focal point the image appears larger. This occurs because less light rays are getting to the lens from the far away object and more are getting to the lens from the closer object. After passing through the lens the light rays are turned into electronic signals by the CCD (charged-coupled device) detector. The CCD detects the light rays and breaks the image up into small pieces called pixels. Then divides them up by brightness and colour, after they are stored as a number.
Brown, S. (2010, May 28). How a Single Lens Reflex Camera Works [Standard Single Lens Reflex Camera]. Retrieved September 16, 2015, from http://www.digitalpicturezone.com/digital-cameras/how-a-single-lens-reflex-slr-camera-works/
Fraser, M. (2013, January 7). DSLR, SLT & Mirorrless Digital Cameras [DSLR Camera]. Retrieved September 16, 2015, from http://www.proavsolutions.com.au/275/dslr-slt-mirorrless-digital-cameras.aspx