THE CAMERA

• ground glass - glass that has had its polished surface removed by fine grinding, used to diffuse light.
• diaphragm - reduce the aperture 
• bellows - collapsible part of a camera or enlarger
• sheet film - flat piece of film cut to a required size before being loaded into a camera

• aperture - an enclosed hollow with an opening  at one end for light to entershutter - mechanical device for opening and closing the aperture of a camera lens to expose film
• exposure - presenting a photosensitive surface to rays or light
• depth of field - range of distance along the axis of an optical instrument
• F-stop - setting of an adjustable lens aperture
• focal length - distance from a focal pint of a lens or mirror to corresponding principal plane

• mode dial - changes mode
• power switch - turns on and off
• flash button - turns flash on and off
• main dial - switches options
• shutter button - takes pictures

• aperture button, exposure compensation button, erase button
• live view shooting button, movie shooting - to record movies
• quick control, direct print button
• menu button - shows menu
• setting - changes settings
• cross keys - move up and down, left and right
• playback - shows pictures
• lock button - locks camera
• magnify button - magnifies picture