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Carl Zeiss Jena Flektogon 20mm f/4

M42 mount20mm1970sEast GermanyCarl ZeissWide-anglef/4

Companies

Asahi Pentax (2) Astro Berlin (15) Bausch & Lomb (1) Bell & Howell (2) Canon (7) Carl Zeiss (19) Carl Zeiss Jena (8) Emil Busch AG (1) EMO A. Seibert Wetzlar (2) Enna Werk München (1) Fujinon (1) Heinz Kilfitt (1) Hermagis (1) ISCO Göttingen (5) Kodak (5) Konica (1) Kowa (1) Leitz (2) Liesegang (1) LOMO (3) Meopta (3) Meyer Optik Görlitz (3) Minolta (2) Oude Delft (1) P. Angénieux Paris (15) Paillard-Bolex (1) Pathé Freres (1) Rodenstock (7) Schneider-Kreuznach (1) SOM Berthiot (3) Switar (1) Taylor & Hobson (7) Voigtländer (2) Wollensak (1)

Focal lengths

10mm (1) 12-120mm (1) 18mm (2) 20mm (1) 21mm (1) 24mm (1) 25mm (2) 28mm (2) 30mm (1) 35mm (4) 40mm (4) 45mm (1) 50mm (34) 55mm (4) 58mm (1) 60mm (3) 63mm (1) 64mm (1) 65mm (7) 68mm (1) 70mm (3) 75mm (14) 80mm (3) 83mm (1) 85mm (7) 90mm (3) 95mm (2) 100mm (6) 105mm (1) 110-115mm (1) 110mm (2) 135mm (2) 140mm (1) 178mm (1) 200mm (1) 250mm (1) 300mm (1) 400mm (2) 610mm (1)

Aperture

f/0.8 (1) f/0.73 (1) f/0.75 (3) f/0.95 (1) f/1 (1) f/1.1 (2) f/1.2 (6) f/1.3 (3) f/1.4 (14) f/1.5 (14) f/1.6 (13) f/1.8 (10) f/1.9 (4) f/1.25 (1) f/1.65 (2) f/2 (14) f/2.2 (1) f/2.3 (5) f/2.5 (3) f/2.8 (7) f/3.5 (3) f/3.6 (1) f/4 (7) f/4.5 (2) f/5.6 (1) f/6.8 (1)

Mounts

26mm (1) 29.3mm (5) 33mm (6) 40mm (2) 41mm (2) 42.5mm (20) 52.5mm (10) 62.5mm (5) 80mm (1) AK16 (1) AR mount (1) Askania (3) Canon RF (1) C mount (7) Contarex mount (11) Contax RF (1) E mount (3) Exakta EXA mount (2) FL / FD mount (7) Kodak S mount (1) L39 (1) M26 (1) M42 mount (8) M58 (1) MD mount (1) Prominent mount (1) Unknown (23)

Country

Czechoslovakia (3) East Germany (14) France (20) Germany (22) Japan (14) Liechtenstein (1) Netherlands (1) Soviet Union (3) Switzerland (2) United Kingdom (7) United States (9) West Germany (32)

Decade

1900s (1) 1910s (1) 1920s (6) 1930s (13) 1940s (11) 1950s (37) 1960s (29) 1970s (15) 1980s (13) 1990s (1)

keywords

5x5 (1) 6x9 (1) 8x10 (1) 16mm cine (1) 16mm projection lens (2) 24x24mm (1) 35mm projection lens (1) C-mount (4) Cine (12) Fast (20) Industry (7) Macro (2) Normal (16) Portrait (12) Projection (57) Standard (15) Tele (7) Ultra-wide angle (2) Ultrafast (9) Wide-angle (9) X-ray (10)

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