Review SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

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SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan. increase.

In short

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan - a good classic manual high-aperture fifty kopeck piece from a bygone era. There is a whole family of such lenses, in which there are approximately 8-9 main models.

Nowadays SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan is interesting for the 'legendary pattern' common to all similar Takumar/Pentax 50/1.4 lenses, compact size and high aperture.

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!.

This SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan refers to the 'PENTAX-M' with Pentax K mount.

In parallel with the '50 / 1.4' line, the Pentax / Takumar lens lines of the 50 / 1.7, 50 / 1.8, 50 / 2, 55 / 1.8, 55 / 1.9, 55 / 2, 55 / 2.2, 58 / 2, 58 / 2.4 classes developed and 50/1.2.

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-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan. Aperture blades are visible.

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).

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

Main technical characteristics of SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan:

Review Instance Name SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

There were 2 lenses on the review: 2126155 и 2120789

Basic properties
  • Pentax K - K mount
  • manual focus only
  • aperture control ring
  • M - a compact lens for compact cameras, like Pentax MX. Without full auto iris control
  • SMC (Sopera-Multi-Coated) - multi-layer optical coating
  • lens suitable for full-frame cameras
  • compact sizes
  • 20867 - lens revision code
Front Filter Diameter 49 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 values ​​from F / 2 to F / 2.8, the aperture blades form a hole with small notches

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
  • red line-label for working in the infrared spectrum
  • white dot mark
  • mount red dot
Diaphragm from f / 1.4 to f / 22.

The lens has an aperture control ring.

The ring has marks 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 235 grams (measured)
Optical design 7 elements in 6 groups

Optical design 50mm 1.4 Pentax-AThe lens does not use special optical elements in its optical design.

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

and newer:

Lens hood Threaded, screwed into the front filter thread
Manufacturer country LENS MADE IN JAPAN (inscription on the body, the lens is made in Japan)
Period 1977-1984. Subsequently replaced by SMC PENTAX-A 1: 1.4 50mm
Price About 100 cu for used option.

Lenses based on the same optical scheme as the SMC PENTAX-M 1:1.4 50mm Asahi OPT. 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.

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

Assembling, focusing

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan is well assembled. Separately, it is worth noting the small size and diameter of the light filter by 49 mm.

The focus ring has an anti-slip insert made of very rough material, rotates approximately 225 degrees (5/8 of a full turn). The course of the ring is very smooth, oily, pleasant. During focusing, the front retractable part of the body does not rotate. Focusing occurs by moving the entire lens block.

The lens uses a Pentax K mount and can be mounted on any modern Pentax digital SLR camera with a K mount.

The front lens shimmers with vibrant hues: red/pink, blue/cyan and purple.

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

Sample photos (APS-C)

The pictures in the gallery above were taken with a camera Pentax K10D (camera view).

All photos in the gallery above are shown without processing. Camera used Sony a3500 (Sony Exmor APS-C HD CMOS sensor at 20 MP). All photos are in-camera JPEG, technology ZEROJPEG. Some photos suffered due to the effect bokeh degradation at fast shutter speeds and wide apertures during EFCS (Y Sony a3500 EFCS cannot be turned off). camera used with adapter Pentax K -> Sony E (NEX).

Source photos can download / watch this link (Google Drive Gallery).

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

Sample photos (Full Frame)

The pictures in the gallery were taken with a camera Canon EOS 5D (Full Frame, 13 MP) and adapter Pentax K -> Canon EF. Technology ZEROJPEG. Sample photos, specially for this review, prepared Natalia (Instagram). Some of the photographs were taken using macro rings for Canon EF, as SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan can catch a mirror with its long protrusions from the side of the bayonet Canon EOS 5D with normal adapter Pentax K -> Canon EF, macro rings remove this problem.

Source photos can download / watch this link (Google Drive Gallery).

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

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

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Comments: 72, on the topic: Review of SMC PENTAX-M 1:1.4 50mm Asahi OPT. CO., Japan

  • Egor

    The article is super! Apparently, a good lens! It’s a pity that it’s not for Nikon. The photos are interesting. Now I also began to clap mainly only with ISO 100. Question about the exif'a of the first photo with tulips, such a long exposure of 1/80 with such a high ISO of 640, was it really that dark there?

    • Arkady Shapoval

      Yes, the sun has already set. Photographed on the balcony, on MDF, with MDF, the real aperture value falls somewhere to 3,2-3,5. So we got such an excerpt. For Nikon, there are many great alternatives, which are the native manual fifty fifty 50, or our proven Helios-1.4N.

  • Egor

    Yes, I myself have often thought about the Nikon 50 1.4, but some boring bokeh compared to 81n. I will probably never change Gelik! The only thing - sometimes you want autofocus in it. But if you don't find fault - the best lens for all occasions! Especially on fx probably!

    • Arkady Shapoval

      I also think so, I have two G-81N.

  • Artur

    And how do you like Nikkor-HC 50/2 in comparison with Helios and the new Nikonov poltikov.

    • Arkady Shapoval

      Nikkor-HC 50/2 did not stay, I can not say.

  • Misha

    These takumars are many different (threaded): depending on the year of manufacture and the presence of enlightenment. There is just super takumar 50 / 1.4 and super multi coated takumar 50 / 1.4 and smc takumar 50 / 1.4

    For example, I have such a couple:
    http://s018.radikal.ru/i515/1206/43/1fb74ff8cf95.jpg

    smc takumar (the one with traces of a fall) - the last threaded version, as I understand it, is an analogue of the one you describe in the article.

    PS. You seem to take lenses to describe on the site? Of relative rarity, I have a takumar 85mm / 1.9 - I can let you play

    • Arkady Shapoval

      I will be glad to accept for a review. I am in Kiev, if you have the same location, then you can cross. My contacts are easy to find on the site. Anyway, thanks for the suggestions.

  • Andrey

    Pentax A 50mm 1.4
    What is his mount, and is it possible to attach it to Nikon?

    • Arkady Shapoval

      Bayonet K, like many other Pentax. Converting to Nikon is difficult.

    • Adrian

      Easily! Nikon adapter and you're done

      • Adrian

        ps M-42 - Nikon

  • Eugene

    Arkady, good day * morning, evening, night - also good :) *
    Could you tell me, is the aperture ring of this lens with fixed intermediate positions between the stops? Or does it spin freely without them? In short, is it suitable for video?
    Thank you for the site - a very useful business!

    • Arkady Shapoval

      No, rattle in the footsteps.

  • Eugene

    OK, thanks. Well, I'll go look for a high-aperture "video fifty" further)

  • Alexander

    Hello.
    Can you tell me on the K-7, too, only the manual shutter speed and aperture mode?
    There the bayonet mount is slightly different from the K-10.

  • R'RёS,R ° F "RёR№

    Arkady! Tell me pliz ... maybe you tried this SMC Pentax M 50 mm 1.2 Can you tell us a little? Thanks.

    • Arkady Shapoval

      I have not tried this.

  • Victor

    can you explain ... just bought this lens for pentax kx. but the shutter button does not work, this lens has a wider aperture blade than a standard, what options can there be?

  • R'RёS,R ° F "RёR№

    There is a Pentax 50 1.2 how to combine with Nikon d5100. Thanks for all the reviews it is NEEDED !!!

  • Tatyana

    Good night !! Tell me please, I have a fotik EOS Kenon 1100 D WILL I GO TO HIM Super-Multi-Coated TAKUMAR 1.4 / 50mm lens? And is there any sense in buying such a fotik or is it easier to fotik a new one !! ???.

  • Andrei

    You have a slight inaccuracy - the first 8-lens Takumar 50 / 1.4 was just NON-radioactive, subsequent versions, up to the last M42, before the bayonet ones, are all radioactive, to a greater or lesser extent. It was checked personally with a dosimeter.

    • Arkady Shapoval

      Inaccuracy removed. Thanks.

  • Dmitriy

    Arkady, hello
    I bought myself the same lens, only A. The diaphragm’s tongue walks very tight, the camera doesn’t support its lifting, maybe you know what can be done?

    Thanks in advance

    Best regards, Dmitry

    • Nicholas

      Petals in oil, need to be cleaned.

  • Egor

    Please tell me what is the difference between Pentax-A SMC 50mm f1.7 and SMC Pentax-M 50mm f1.7?

  • basic

    can you put it on kenon?

    • Arkady Shapoval

      Yes, you can.

  • Rinat

    Good day, Arkady! I read on the forums that it is possible to use the SMS Pentax-M 10: 10 1 mm lens on the Samsung GX-1.7 (Pentax K50D). I put the lens - F- lights up, in manual mode no change and the shutter does not work. For the first time on a digital camera I work with a manual lens and I'm afraid to do something wrong. Can you tell me what is the reason?

    • Rinat

      It seems to have figured out the shutter, changed it in the settings menu. I have not mastered it to the end, but the first photos are pleasing. An interesting lens!

      • R'RёS,R ° F "RёR№

        Wheel in mode M and a small button with a green dot, and a lot of good photos.

      • Eugene

        how did you manage? I bought today, my F- and M are also lit

    • Yura

      Good day, Rinat. Please tell me if the focus indication lamp lights up when using SMC Pentax-M 1: 1.7 50 mm on the Pentax K10D

  • uriahn

    To begin with, we program the “green button” for exposure metering: Menu-my settings-p.14 (for K200): * green button in manual ... * -pp2 (diaphragm pior) -OK! When shooting, the wheel is on “M” , switch Af-Mf in Mf (otherwise the shutter button may not work), set the aperture. Then everything is simple: I focused, pressed the green button, caught the shutter button. The masterpiece is ready! +++ THANKS, Arkady, for the most interesting reviews !!! +++

  • R'RёS,R ° F "RёR№

    Bought a SMC M50 f1.4 with red enlightenment, what's the difference?

  • Vlad

    My favorite lens, I’m practically not taking it off the carcass. On Pentax K-20, problems with aperture recognition were not noticed

  • Aynur

    Good day! Help me please! I bought a Pentax K-30 carcass. And I wondered which poltos to buy: Helios 81 n or this SMC Pentax-M 1: 1,4.
    Help me please!
    Thank you!

  • Sergei

    This is my favorite lens I use on kenon.

  • Ram

    For connoisseurs of this lens, there is a copy of the first version, the price is negotiable, anyone interested write Foravar108@yandex.ru

  • anonym

    Good day. There is this lens with traces of fungus on the lenses. Is it fatal to him or can it be fixed? Is the lens disassembled? Does it have bonded lenses?

  • Maksim

    Selling lenses SMC Pentax-M 50 mm f / 1.4 http://fotoselling.ru/products/14786532 и http://fotoselling.ru/products/18893716
    Novosibirsk + by mail in Russia and abroad
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    Cash on delivery, reviews, warranties, experience.
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English-version of this article https://radojuva.com/en/2012/03/smc-pentax-m-1-4-50mm/comment-page-1/

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