vignetting, viewfinder, iris diaphragm, thumbwheel, handgrip, autofocus, convex lens, nosepiece, collimator, chromatic aberration, eyepiece, photomultipliers, flashgun, sunblind, foglamp, aperture, parallax, phototransistor, bypass capacitor, crystalline lens, collimation, radiolucent, galvo, backplate, diopter, focal length, digitals, monopod, transmissivity, detents, handwheel, passband, photodiode, magnifications, aspect ratio, emissivity, image intensifier, zoom lens, convex, lenses, interlaced scanning, monochromator, colonoscope, leica, toric lens, loupe, mju, gearset, graininess, pentile, chroma, spherical aberration, angulation, galvanometer, parabolic reflector, variable resistor, tonneau, imagesetter, diffraction grating, protrusion, gimbals, fovea, photodetector, photocell, arcsecond, inductances, baseplate, pixels, serrations, bevels, retroreflector, subminiature, camera lens, photomultiplier, backspacing, duplexer, glassless, handrest, dipole antenna, fisheye, electrolytic capacitor, waviness, scroller, luminous intensity, fresnel lens, angular velocity, lordosis, soleplate, waveband, countersunk, obliquity, trapezium, faceplate, brightwork, fundus, illuminance, luminous flux, jaggy, projector, scart, wavefront, sigmoid