Canon A650 Digital Camera hyperfocal distance Focusing distance that provides the maximum focus that includes infinity at any given aperture. Canon A650 optical enhancing and protective layers used on and between lenses and lens elements. Optics The physical study of light and how it reacts to and with other materials. Reflection Change of direction of energy as it returns from a surface. Canon A650 Digital Camera effect on light; as it passes from one medium to another, it bends. Retrofocus lens A lens that works as though it is a longer focal length lens mounted backwards Canon A650 Digital Camera. to the camera, thus allowing the lens to have a wider angle of view than normal. It is positioned far enough away from the sensor to allow the mirror in the SLR design to operate without difficulty.
