SMC PENTAX 1: 1.4 / 50 ASAHI OPT Short Review. CO., JAPAN

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SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN. increase.

In short

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN is a good manual high-aperture fifty-kopeck piece. There is a whole family of such lenses, in which there are approximately 8-9 basic models. I already had an older version on my review SMC TAKUMAR 1: 1.4/50 ASAHI OPT. CO., JAPAN., on the basis of which the lens from this review was made.

This SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN is the first Pentax class 50 / 1.4 lens to receive the Pentax K mount. Prior to that, all ASAHI OPT lenses. CO., JAPAN class 50 / 1.4 used the common M42x1 / 45.5 landing thread.

All lenses of this family (except for the first and the last) use the same optical scheme of 7 elements in 6 groups (classic planar scheme [Planar]). The first was'Planar killer'and used an advanced scheme for those times 8/6 (difference between 7/6 and 8/6), and last - super-modern circuit 15/9!.

Personally, I am a great connoisseur and fan of old Pentax optics (aka ASAHI OPT. CO.), After working with which pleasant emotions always remain. This SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN belongs to one of the first lines of lenses with Pentax K mount. Usually this line is called so - 'Pentax K'(by analogy with Pentax' M ',' A ',' F ',' FA ',' DFA '). Also, this is the first lens in the '50 /1.4 'family to use the name'PENTAX', before this modification all solutions from the '50 /1.4' line had the name 'TAKUMAR'.

In parallel with the line of the best solutions of the 50 / 1.4 class, the line of Pentax / Takumar lenses of the class 50 / 1.7, 50 / 1.8, 50/2, 55 / 1.8 and 55/2 developed.

It's important: This lens does not suffer from lens coating degradation. For example older versions like Super-Multi-Coated TAKUMAR 1: 1.4 / 50 ASAHI OPT. CO., JAPANsuffered from severe degradation of enlightenment.

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

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-A 1: 1.2 50mm + black / silver 'SPECIAL' (7/6, 20987, 1984-2004)

1.4/50

  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)
  3. Super-Multi-Coated TAKUMAR 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 37902, 1971-1972)
  4. SMC TAKUMAR 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 37908, 1972-1975)
  5. SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN (7/6, 20847, 1975-1977)
  6. SMC PENTAX-M 1: 1.4 50mm ASAHI OPT. CO., JAPAN (7/6, 20867, 1977-1984)
  7. SMC PENTAX-A 1: 1.4 50mm (7/6, 20887, 1984-1989)
  8. SMC PENTAX-F 1: 1.4 50mm (7/6, 20827, 1987-1991)
  9. SMC PENTAX-FA 1: 1.4 50mm (7/6, 20817, 1991-2018[?])
  10. HD PENTAX-D FA * 1: 1.4 50mm SDM AW (15/9, 21260, 2018->)

1.4/55

  1. SMC PENTAX-DA * 1: 1.4 55mm SDM (-, 9/8, 21790, 2008->)

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)

1.8/50

  1. SMC PENTAX-DA 1: 1.8 50mm (6/5, 22177, 2012->)

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)

1.8/55

  1. Auto-takumar 1: 1.8 / 55 ASAHI OPT. CO. Lens made in japan (6/5, 1958-1962)
  2. Super takumar 1: 1.8 / 55 Asahi Opt. Co. Lens made in japan (6/5, 37106, 1965-1971)
  3. Super-Multi-Coated TAKUMAR 1: 1.8 / 55 ASAHI OPT. CO., JAPAN (6/5, 37104, 1971-1972)
  4. SMC TAKUMAR 1: 1.8 / 55 ASAHI OPT. CO., JAPAN (6/5, 37108, 1972-1975)

2/55

  1. Auto-takumar 1: 2 f = 55mm Asahi Opt. Co., Japan (6/5, 34100, 1958-1959)
  2. Super takumar 1: 2 / 55 Asahi Opt. Co. Lens made in japan (6/5, 37103, 1962-1973)
  3. SMC TAKUMAR 1: 2 / 55 ASAHI OPT. CO., JAPAN (6/5, 37109, 1973-1975)

black-silver 2/58, 2.4/58, 1.9/55, 2.2/55:

  1. takumar 1: 2 f = 58mm (6/4, 1957-1958, M42)
  2. takumar 1: 2.4 f = 58mm (5/3, 1957-1958, M42)
  3. Auto-takumar 1: 1.9 f = 55mm (6/5, 1958-1959, M42)
  4. Auto-takumar 1:2.2/55 (6/5, 1961-1963, M42)

The names of the lenses in this list correspond exactly to the inscription with the lens name near the front lens (except for the serial number).

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN and SMC TAKUMAR 1: 1.8/55 ASAHI OPT. CO., JAPAN

Main technical characteristics of SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN:

Review Instance Name SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN 1030387
Basic properties
  • Pentax K - K mount
  • manual focus only.
  • aperture control ringas well as semi-automatic iris control using the ring aperture
  • SMC (Sopera-Multi-Coated) - multi-layer optical coating
  • lens suitable for full-frame cameras
  • metal casecompact size
  • 20847 - lens version code
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

At F / 2 and F / 2.8, the aperture blades form a small jagged opening.

Tags
  • focus distance scale in meters and feet
  • depth of field scale for F / 4, 5.6 (not explicitly), 8, 11 (not explicitly), 16, 22
  • 'R' mark for infrared operation
  • white convex mark-point of installation
Diaphragm from f / 1.4 to f / 22. The lens has an aperture control ring. There are labels on the ring for F / 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22. You can set one additional value between each pair of numbers (except F / 1.4-> F2 and F / 16-> F / 22)
MDF 0.45 meters, maximum magnification ratio 1:6.7
The weight 270 grams (measured)
Optical design 7 elements in 6 groups

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPANO optical designThe lens does not use special optical elements in its optical design.

The same optical design is used by older lenses of the same family:

and newer:

Lens hood Threaded, screwed into the front filter thread
Manufacturer country LENS MADE IN JAPAN (body inscription, lens made in Japan).
Period 1975-1977. Subsequently replaced by SMC PENTAX-M 1: 1.4 50mm ASAHI OPT. CO., JAPAN.
Price About $ 100 for used option. Current prices can be look at EBAY.

Prices for modern Pentax lenses can be viewed at E-Catalog.

Lenses based on the optical scheme on which the SMC PENTAX 1: 1.4 / 50 ASAHI OPT is built. CO., JAPAN (from this review, produced from 1972 to 2018 (almost 50 years). The first was a manual SMC TAKUMAR 1: 1.4/50 ASAHI OPT. CO., JAPANand the last one is autofocus SMC PENTAX-FA 1: 1.4 50mm.

Assembly, appearance, focusing

Pictured next to SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN shown SMC TAKUMAR 1: 1.8/55 ASAHI OPT. CO., JAPAN.

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN is well built. The focusing ring has an anti-slip insert made of very coarse material and rotates approximately 225 degrees (5/8 of a full turn). The movement of the ring is very smooth, oily, pleasant. During focusing, the front retractable body does not rotate. Focusing occurs by moving the entire lens unit. Lens chamfers are poorly blackened.

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

Sample photos (Full Frame + APS-C)

Pictures in the gallery were obtained using Nikon D4 (Full Frame, 16 MP), converting the original RAW files with the original Nikon Capture NX-D v 1.4.6 utility. A

Pictures in the gallery were obtained using Sony a3500 (Sony Exmor APS-C HD CMOS sensor at 20 MP, JPEG from the camera). An adapter was used Pentax K -> Sony E / NEX.

You can download / view the original photos in RAW format (Nikon '.NEF' and Sony '.ARW') at this link (gallery / folders on Yandex.Disk).

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

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SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

SMC PENTAX 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

Material prepared Arkady Shapoval... Look for me on Youtube | Facebook | Instagram | Twitter | Telegram.

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Comments: 10, on topic: SMC PENTAX Brief 1: 1.4 / 50 ASAHI OPT. CO., JAPAN

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