Asahi Super-Takumar 1:1.4/50

Description and Review

Asahi Super-Takumar 1:1.4/50 (Mark II) lens.
Asahi Super-Takumar 1:1.4/50 (Mark II) lens.
The Asahi Super-Takumar 1:1.4/50 Marks I & II lenses compared.

The Marks I & II compared.

Description, Notes & Specifications

Manufactured:1965—1971
Camera Mount:M42x1
Lens Elements / Groups:7 / 6
Diaphragm Type:automatic / manual
Diaphragm Blades:6 / hexagonal
Angle of View:46°
Maximum Aperture:f/1·4
Minimum Aperture:f/16
Minimum Focus Distance:0·45 metres
Magnification Factor:
Filter Size:ø 49 mm (screw)
Length:37·5 mm / 45 mm
Largest Diameter:59 mm
Weight:≈230 grams
Product Numbers:378 / 37800 
37801
37802
Serial Number Range:
My Serial Numbers:3074571
4331990

Super-Takumar 50mm f/1·4 — Newest high-speed 7-element lens, utilizing latest optical glass advances. High resolving power combines with outstanding brightness for easiest focusing. An ideal all-round lens. Equipped with fully automatic diaphragm.1


Distance engravings in yellow (metres) and blue (feet); white dot indicating f/2 (except IIA).


Mark IIA: Product number 378/37800; no white dot.

Mark IIB: Product number 37801; introduced 11/1966; white dot indicating f/2.

Mark IIC: Product number 37802; introduced 04/1969.

Variations: A/M or Auto/Man. lever; differences in the colour of the coating.

Anomoly: Lens 4331990 says Super-Takumar on the bezel, but the product number on the A/M lever is 37902.


Warning: This lens cannot be used with certain cameras, notably the Pentax ES and the Canon EOS 5D series.


Depth of Field Guide

 f/1·4f/2f/2·5f/2·8f/3·5f/4f/4·5f/5·6f/6·7f/8f/9·5f/11f/16
0·450·450·450·450·450·440·460·440·460·440·460·440·460·440·460·440·460·440·470·430·470·430·470·430·480·420·49
0·500·500·500·490·510·490·510·490·510·490·510·490·510·490·510·480·520·480·520·480·520·470·530·470·530·460·55
0·550·550·550·540·560·540·560·540·560·540·560·540·560·530·570·530·570·530·570·520·580·520·590·510·590·500·61
0·600·590·610·590·610·590·610·590·610·590·620·580·620·580·620·580·620·570·630·570·640·560·640·560·650·540·68
0·700·690·710·690·710·690·710·680·720·680·720·680·720·670·730·670·730·660·740·660·750·650·760·640·770·620·81
0·800·790·810·780·820·780·820·780·820·770·830·770·830·770·840·760·850·750·850·740·870·730·880·720·890·690·95
0·900·890·910·880·920·880·930·870·930·870·940·860·940·860·950·850·960·840·970·830·990·821·000·801·020·771·09
1·000·981·020·981·020·971·030·971·040·961·040·951·050·951·060·941·070·921·090·911·110·901·130·881·150·841·24
1·201·181·231·171·241·161·251·151·251·141·271·131·281·131·291·111·311·091·331·071·361·051·401·031·430·971·57
1·501·461·541·451·561·431·571·431·581·411·601·401·621·381·641·361·671·331·711·311·761·281·821·251·881·162·13
2·001·932·071·902·111·882·131·872·151·842·191·822·221·802·251·752·321·712·401·672·501·622·621·572·761·433·33
3·002·853·172·793·252·743·312·713·352·653·462·613·532·563·612·483·802·394·022·304·302·214·682·125·131·877·58
5·004·595·494·445·734·325·944·256·084·096·423·996·703·896·993·697·753·518·693·3210·143·1212·562·9516·502·48∞ 
10·008·4912·177·9713·427·5814·677·3715·546·9218·046·6220·386·3623·435·8434·875·40∞ 4·95∞ 4·53∞ 4·17∞ 3·29∞ 
∞ 35·83∞ 28·10∞ 23·82∞ 21·82∞ 18·26∞ 16·35∞ 14·80∞ 12·25∞ 10·45∞ 8·90∞ 7·60∞ 6·63∞ 4·66∞ 

(Distances in metres; Circle of Confusion is taken at 0·032 millimetres.)

Review

Recommended: Yes

References

  1. Asahi Pentax: Lenses & Accessories [06106]
  2. van Oosten, G. 1999. The Ultimate Asahi Pentax Screw Mount Guide. Uitgeverij Jansz.