SMC PENTAX 1:1.2/50 ASAHI OPT. CO., JAPAN, 'GOLD' version

SMC PENTAX 1:1.2/50 ASAHI OPT. CO., JAPAN, 'GOLD' version, 'GOLD' version

SMC PENTAX 1:1.2/50 ASAHI OPT. CO., JAPAN, 'GOLD' version, 'GOLD' version

Name on the body SMC PENTAX 1: 1.2 / 50 ASAHI OPT. CO., JAPAN
Basic properties
  • Pentax K - K mount
  • manual focus only
  • aperture control ring
  • SMC (Sopera-Multi-Coated) - multi-layer optical coating
  • lens suitable for full-frame cameras
  • case frame is gold-plated
  • only 300 copies released
Front Filter Diameter 52 mm, metal thread for filters
Focal length 50 mm
Zoom ratio 1 X (this is a fixed lens, it does not have a zoom).
Designed by for film cameras with a frame size of 24 x 36
Number of aperture blades 8 petals. Petals dark matte
Tags
  • focusing distance scale in meters (white markings) and feet (black markings). Regular version has a different marking color
  • depth of field scale for F / 4, 5.6 (not explicitly), 8, 11 (not explicitly), 16, 22
  • red line-label for working in the infrared spectrum
  • black convex volumetric dot mark for easy lens orientation (for regular version used white)
  • red dot for mounting the bayonet on the side of the bayonet tabs
Diaphragm from f / 1.2 to f / 22.

The lens has an aperture control ring. Manual or semi-automatic iris control is possible (this function must be supported by certain cameras).

The ring has marks for f/1.2, 2, 2.8, 4, 5.6, 8, 11, 16, 22
MDF 0.45 meters, maximum magnification ratio 1:6.7
The weight about 345 grams, but the exact weight is unknown
Optical design 7 elements in 6 groups

smc-pentax-af-1-2-50mm-lens-optical-designThe lens does not use special optical elements in its optical design.

The same optical scheme is used by lenses:
Lens hood Threaded, screwed into the thread of the front light filter.
Manufacturer country Japan. Regular version had an additional inscription LENS MADE IN JAPAN on the back of the case.
Period A batch of 300 units was released in 1981, the lenses came with a Pentax LX GOLD camera
Price About 5000 cu for used option.

Appearance

All major versions of similar lenses Asahi Opt. Co., Takumar / Pentax:

1.2/50

  1. SMC PENTAX 1: 1.2 / 50 ASAHI OPT. CO., JAPAN (7/6, 20947, 1975-1984)
  2. SMC PENTAX 1:1.2/50 ASAHI OPT. CO.,JAPAN'GOLD' (7/6, 1981)
  3. SMC PENTAX-A 1: 1.2 50mm (7/6, 20987, 1984-2004)
  4. SMC PENTAX-A 1: 1.2 50mm Special (7/6, 2000)

1.4 / 50 (video)

  1. Super takumar 1: 1.4 / 50 Asahi Opt. Co., Lens made in Japan (8/6, 358, 1964-1966)
  2. Super takumar 1: 1.4 / 50 Asahi Opt. Co. Lens made in japan (7/6, 37800, 1965-1971, F/2 in number)
  3. Super takumar 1: 1.4 / 50 Asahi Opt. Co. Lens made in japan (7/6, 37801, 1965-1971, F/2 dot)
  4. Super takumar 1: 1.4 / 50 Asahi Opt. Co., Lens made in Japan (7/6, 37802, 1965-1971, comma after 'CO.')
  5. Super-Multi Coated TAKUMAR 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 37902, 1971-1972)
  6. SMC TAKUMAR 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 37908, 1972-1975)
  7. SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 20847, 1975-1977)
  8. SMC PENTAX-M 1: 1.4 50mm ASAHI OPT. CO., JAPAN (7/6, 20867, 1977-1984)
  9. SMC PENTAX-A 1: 1.4 50mm (7/6, 20887, 1984-1989)
  10. SMC PENTAX-F 1: 1.4 50mm (7/6, 20827, 1987-1991)
  11. SMC PENTAX-FA 1: 1.4 50mm (7/6, 20817, 1991-2023)
  12. HD PENTAX-D FA * 1: 1.4 50mm SDMAW (15/9, 21260, 2018->)
  13. SMC PENTAX-FA 1: 1.4 50mm Classic (7/6, 2023->)
  14. HD PENTAX-FA 1: 1.4 50mm (7/6, 2023->)

1.8 / 55 (video)

  1. takumar 1:1.8 f=55mm Asahi OPT. CO., Japan (6/5, 1958, zebra)
  2. Auto-takumar 1:1.8 f=55mm Asahi OPT. CO., Japan (6/5, 1958-1960, zebra)
  3. Auto-takumar 1:1.8/55 ASAHI OPT. CO., Lens made in Japan (6/5, 1960, with 'R')
  4. Auto-takumar 1:1.8/55 ASAHI OPT. CO., Lens made in Japan (6/5, 1960-1962, no 'R', oblique lines of the depth of field)
  5. Auto-takumar 1:1.8/55 ASAHI OPT. CO., Lens made in Japan (6/5, 1962, no 'R', straight lines of depth of field)
  6. Super takumar 1: 1.8 / 55 Asahi Opt. Co., Lens made in Japan (6/5, 1962, fine ribs, f/1.8 left)
  7. Super takumar 1: 1.8 / 55 Asahi Opt. Co., Lens made in Japan (6/5, before 1965, fine ribs, f/1.8 right)
  8. Super takumar 1: 1.8 / 55 Asahi Opt. Co. Lens made in japan (6/5, 37106, before 1971, large ribs)
  9. Super-Multi Coated TAKUMAR 1: 1.8 / 55 ASAHI OPT. CO., JAPAN (6/5, 37104, 1971-1972)
  10. SMC TAKUMAR 1: 1.8 / 55 ASAHI OPT. CO., JAPAN (6/5, 37108, 1972-1975)
  11. SMC PENTAX 1: 1.8 / 55 ASAHI OPT. CO., JAPAN (6/5, 20747, 1975-1977)

2 / 55 (1.9 / 55)

  1. Auto-takumar 1:1.9 f=55mm Asahi Opt. Co.,Japan (6/5, 1958-1959)
  2. Auto-takumar 1: 2 f = 55mm Asahi Opt. Co., Japan (6/5, 1958-1959, zebra)
  3. Auto-takumar 1: 2 f = 55mm Asahi Opt. Co., Japan (6/5, 34100, 1958-1959)
  4. Super takumar 1: 2 / 55 Asahi Opt. Co., Lens made in Japan (6/5, small fins, F/2 left)
  5. Super takumar 1: 2 / 55 Asahi Opt. Co., Lens made in Japan (6/5, small ribs, F/2 on the right)
  6. Super takumar 1: 2 / 55 Asahi Opt. Co. Lens made in japan (6/5, 37103, 1962-1973, large ribs)
  7. Super takumar 1: 2 / 55 Asahi Opt. Co. Lens made in japan (6/5, 37107, additional aperture pins)
  8. SMC TAKUMAR 1: 2 / 55 ASAHI OPT. CO., JAPAN (6/5, 37109, 1973-1975)
  9. SMC PENTAX 1: 2 55mm ASAHI OPT. CO., JAPAN (6/5, 1976-1977)

1.7/50

  1. SMC PENTAX-M 1: 1.7 50mm ASAHI OPT. CO., JAPAN (6/5, 20877, 1977-1984)
  2. SMC PENTAX-A 1: 1.7 50mm (6/5, 20897, 1984-1989)
  3. SMC PENTAX-F 1: 1.7 50mm (6/5, 20837, 1987-1991)
  4. SMC PENTAX-FA 1: 1.7 50mm (6/5, 20907, 1991-2004)

2/50

  1. SMC PENTAX-M 1:2 50mm ASAHI OPTICAL CO. (5/5, 20677, 1979-1985)
  2. SMC PENTAX-A 1: 2 50mm (5/5, 20697, 1985-1998)

2.2/55

  1. takumar 1:2.2/55 Asahi Opt. CO., Japan (6/5, 1961-1963)
  2. Auto-takumar 1:2.2/55 ASAHI OPT. CO., Lens made in Japan (6/5, 1961-1963)

2/58

  1. takumar 1:2 f=58mm Asahi Opt. Co., Japan (6/4, 1957-1958)
  2. takumar 1: 2 f = 58mm Asahi Opt. Co., Japan (6/4, 1957-1958, labeled 'R')

DA (APS-C: 1.4/55 DA* + 1.8/50 DA)

  1. SMC PENTAX-DA * 1: 1.4 55mm SDM (9/8, 21790, 2008->)
  2. SMC PENTAX-DA 1: 1.8 50mm (6/5, 22177, 2012->)

Asahi-Kogaku (M37x1, 3.5/50 + 2.4/58 -> M42)

  1. takumar 1: 3,5 f = 50mm Asahi-kogaku (4/3, 1952, M37×1)
  2. takumar 1: 3.5 f = 50mm Asahi-kogaku (4/3, 1952, , M37×1, pre-set)
  3. takumar 1: 2.4 f = 58mm Asahi-kogaku (5/3, 1954, M37×1, silver)
  4. takumar 1: 2.4 f = 58mm Asahi Opt. Co., Japan (5/3, 1957-1958, M42)

The lens names in this list correspond exactly to the lens name label on the lens barrel (except for the serial number and/or filter diameter).

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Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram

03.07.2023 | News Email | VK | FB | Google+ | Twitter | Youtube

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Comments: 3, on the topic: SMC PENTAX 1:1.2/50 ASAHI OPT. CO., JAPAN, 'GOLD' version

  • Oleg
    03.09.2023 in 21: 01 Reply

    Somewhere a gypsy baron choked on saliva

  • Michael
    03.09.2023 in 22: 05 Reply

    What blatant bad taste

  • Dmitry Kostin
    03.09.2023 in 23: 59 Reply

    The same “golden” cameras and lenses were in Lakey (M4-2, R3, M6, M10, MP), Rollei35S, Olympus OM2n, Minolta CLE, Nikon FA, Canon F1, etc., etc.
    To my shame, I can say that I like this, although I am absolutely indifferent to gold.

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