SMC PENTAX-F 1: 1.7 50mm

SMC PENTAX-F 1: 1.7 50mm

SMC PENTAX-F 1: 1.7 50mm

Main technical characteristics of SMC PENTAX-F 1:1.7 50mm:

Name PENTAX SMC PENTAX-F 1:1.7 50mm + PENTAX SMC PENTAX-F 1:1.7 50mm
Basic properties
  • SMC (Super Multi Coated) - special super-multi coated optics
  • F – range of auto focus lenses
  • Bayonet mount Pentax K
  • aperture control ring
  • lens suitable for full-frame cameras
  • compact sizes
  • 20837 – lens model marker
Front Filter Diameter 49 mm, metal thread for filters
Focal length 50 mm

On Pentax cameras with APS-C sensor EGF lens equals 75mm

Zoom ratio 1 x
Designed by for film cameras with a frame size of 24 x 36 mm
Number of aperture blades 6 petals
Tags
  • window with a focusing distance scale in meters (yellow) and feet (blue)
  • depth of field scale for f / 5.6, 16, 22
  • red label-stripe for working in the infrared spectrum
  • black raised dot mark for easy lens orientation
  • red bayonet attachment point (on the side of the bayonet tabs)
  • green letter 'A' on the iris control ring to switch to automatic mode
  • aperture ring release button
Diaphragm F / 1.7 to F / 22
MDF 0.45 m, maximum magnification ratio 1: 6.7.
The weight 205 grams
Optical design 6 elements in 5 groups

ASAHI OPT. CO., JAPAN SMC PENTAX-M 1: 1.7 50mmThe lens does not use special optical elements in its optical design. The same optical design is used by other lenses of the class Pentax 50 / 1.7.

Lens hood Threaded, screwed into the front filter thread
Manufacturer country JAPAN (lens made in Japan)
Period From 1987 to 1991. In 1991 replaced by the SMC PENTAX-FA 1:1.7 50mm version.
Price About 100 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.

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