camera lens, zoom lens, lens, aperture, eyepiece, pentaprism, autofocus, flashgun, camera, focal length, magnification, telephoto, zoom, tripod, pixels, vignetting, camcorder, megapixel, monopod, fisheye, parallax, telephoto lens, thumbwheel, pinhole, brightness, handgrip, reticule, projector, chromatic aberration, kickstand, webcam, rangefinder, image intensifier, iris diaphragm, diopter, trackpad, fisheye lens, penlight, illuminator, enlarger, loupe, touchpad, pinhole camera, lense, spacebar, magnifier, grayscale, laparoscope, digitals, swivel, panorama, peripheral vision, detents, joystick, chroma, bezel, convex lens, headlights, thumbnails, fps, antialiasing, aspect ratio, cam, emissivity, leica, filmstrip, graininess, defocus, keypad, stereographic, backplate, reticle, scroller, polarizer, glassless, camera obscura, blurriness, touchscreen, gimbals, periscope, stereoscope, mju, qwerty keyboard, angle, imager, tachometer, cameraphone, collimation, strobe, stylus, digitiser, photocell, toggle switch, gimbal, prisms, accelerometer, monochrome, anaglyph, parabolic mirror, screen, fovea, speedometer, keyboard, recorder, telephone, darkroom, finder, paintbrush, thermometer, transparencies, checkers, crt, keyboards, monitor, oscilloscope, theodolite, transmitter, binoculars, chip, commutator, compasses

gunsight, photographic camera, scope, telescope

optical device

view finder