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The significance of lens aberrations
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aberration absorbs acid angle aperture areas astigmatism black and white bleach bromide bulbs camera lens capacitor characteristic curves chemical coated colour film colour materials colour negative colour photography colour printing colour temperature colour transparency contact printed continuous tone correct couplers cyan diffuse dots effect electronic flash emulsion enlarger equipment exposed exposure f-number factor flashbulbs focal length focal plane shutter focus fogging gelatin give glass grain graph green grey guide number half-tone high contrast highlights illumination image luminance Kodak lamp latent image lenses letterpress light source machine magenta mask maximum metal meter monochrome negative material normal optical original pack paper photographic photolithography plate positive practical processing produced reduce reflector reproduction result reversal screen sensitive sensitivity speck separation negative shadow shutter speed silver bromide silver halide solution spherical aberration surface synchronisation telephoto tube tungsten usually voltage wavelengths white light yellow