Major SLR and RF innovations of the 20th century

YearProductWorld's firstMount
1932Leica II35mm rangefinder camera.Screw mount
Contax IDual bayonet
1936Kine Exakta35mm SLR camera.Exakta
1941Kodak EktarLine of single-coated lenses.Proprietary
1948Rectaflex A.100035mm SLR camera with pentaprism used in the viewfinder.Proprietary
1948Duflex35mm SLR camera with external automatic aperture stop-down and instant-return mirror.Proprietary
1949Contax S and Praktica35mm SLR cameras with the M42 screw mount.
Contax S was also the first German 35mm SLR camera with pentaprism used in the viewfinder.
M42
1950Exakta Varex35mm SLR camera with interchangeable viewfinders and interchangeable focusing screens.Exakta
1950P. Angenieux 35mm F/2.5 R1Retrofocus wide-angle lens.Popular MF mounts
1955Kilfitt Makro-Kilar 4cm f/3.5Macro lens to provide continuous focusing from infinity to 1:2 (model E) or 1:1 (model D).Popular MF mounts
1956Contax E35mm SLR camera with built-in light meter.M42
1956Contax F and Praktica FX 235mm SLR cameras with internal automatic aperture stop-down but without instant-return mirror.M42
1956Chiyoko RokkorLine of multi-coated lenses.Leica screw mount
1958Zunow35mm SLR camera with internal automatic aperture stop-down and instant-return mirror.Proprietary
1959Voigtlander-Zoomar 36-82mm F/2.8Zoom lens.Popular MF mounts
1961PC-Nikkor 35mm F/3.5Perspective control lens.Nikon F
1962Fisheye-Nikkor 8mm F/8Fisheye lens.Nikon F
1962Fish-eye-Takumar 18mm F/11Full-frame (diagonal) fisheye lens.M42
1963Topcon RE Super35mm SLR camera with through-the-lens (TTL) metering system.Topcon
1966Leitz Wetzlar Noctilux 50mm F/1.2Lens for 35mm rangefinder cameras to feature an aspherical element.Leica M
1967Praktica PL electronic35mm SLR camera with an electronically controlled shutter.M42
1967Nikkor-N 24mm F/2.8Lens to feature a floating element system.Nikon F
1968OP-Fisheye-Nikkor 10mm F/5.6 OPLens for 35mm SLR cameras to feature an aspherical element.Nikon F
1969Canon FL-F 300mm F/5.6Lens for visible light photography to employ synthetic fluorite.Canon FL
1969Praktica LLC35mm SLR camera with electric contact lens mount and electromechanical aperture stop-down.Modified M42
1971Asahi Pentax Electro Spotmatic35mm SLR camera with electronic aperture-priority TTL (stop-down) automatic exposure metering and electronically controlled shutter.M42
1971Canon FD 55mm F/1.2 ALLens for 35mm SLR cameras for use without a mirror-lock mechanism to feature an aspherical element.Canon FD
1975Leitz Canada APO-Telyt-R 180mm F/3.4Apochromatic lens.Leica R
1979Sigma 21-35mm F/3.5-4Ultra-wide angle zoom lens.Popular MF mounts
1984Kino Precision Kiron 28-210mm F/4-5.6 MC MacroSuperzoom lens.Popular MF mounts
1985Minolta ALine of interchangeable AF lenses.Minolta A
1987Canon EFFully-electronic mount for 35mm SLR cameras.Canon EF
1987Canon EF 300mm F/2.8L USMInterchangeable lens with built-in ultrasonic motor.Canon EF
1995Canon EF 75-300mm F/4-5.6 IS USMInterchangeable lens with built-in image stabilization.Canon EF
1999Nikon D1Digital SLR camera developed by a major camera manufacturer.Nikon F
2002Contax N Digital35mm full frame digital SLR camera.Contax N

NOTE: only serially-produced consumer photographic products for 35mm cameras with interchangeable lenses are listed.

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