Optical lens: A lens that focuses the image in a camera.
Charge-coupled device (CCD) - a light-sensitive integrated circuit that stores and displays the data for an image in such a way that each pixel (picture element) in the image is converted into an electical charge the intensity of which is related to a color in the color spectrum.
Shutter Release - The button that releases or "trips" the shutter mechanism.
Self-Timer - This mechanism trips the shutter after a short delay - usually 7 to 10 seconds - allowing everyone to be in the photograph.
Aperture - It dilates and contracts to control the diameter of the hole that the light passes though, to let in more or less light. It is controlled by the f-stop ring.
Shutter - It opens and closes to control the length of time light strikes the film.
Exposure - Process of allowing light to reach light.
Depth of field - The distance between the nearest and the furthest objects that give an image judged to be in focus in a camera.
F-stop - the ratio of focal length to the effective diameter of a lens; also called f-number, it represents how much light is able to pass through the lens.
Focal length - The distance between the center of a lens or curved mirror and its focus.
At the top right you can see the AE/FE lock button that seconds as the index key when in Playback mode, and next to that is the AF point selection button that seconds as the magnify button when in Playback. To the left (right of the LCD) we can see the AV/Exposure composition button, which allows you to switch between shutter speed and aperture values in manual mode, or exposure compensation button, which compensation in Program mode.
Continuing on down, we have the 4-way controller. which has several jobs. These include navigating the menu system, scrolling inside an enlarged image in playback mode, and a quick recall of specific camera functions.















