Asahi Super-Takumar 1:2.8/105

Description and Review

Asahi Super-Takumar 1:2.8/105 lens.
Asahi Super-Takumar 1:2.8/105 lens.

Description & Specifications

Manufactured:1963—1971
Camera Mount:M42x1
Lens Elements / Groups:5 / 4
Diaphragm Type:automatic / manual
Diaphragm Blades:6 / hexagonal
Angle of View:23°
Maximum Aperture:f/2·8
Minimum Aperture:f/22
Minimum Focus Distance:1·20 metres
Magnification Factor:
Filter Size:ø 49 mm (screw)
Length:63 mm / 76 mm
Largest Diameter:57 mm
Weight:≈285 grams
Product Numbers:350 / 43500 
43501
Serial Number Range:
My Serial Number:678219

Super-Takumar 105mm f/2.8 – A quality medium telephoto lens of 5 elements, with well corrected aberrations. Light-weight design for portability and easy handling. Recommended for scenery, portrait, news photos, other moderate telephoto effects. Equipped with fully automatic diaphragm; supplied with special lenshood.1


Distance engravings in yellow (metres) and blue (feet); some samples have no IR marker (see below).

Same optical design as the Takumar 1:2.8/105 (Mark II) and the Super-Multi-Coated TAKUMAR 1:2.8/105 lenses.


Mark IA: Product numbers 350 and 43500; from February 1964 the seat ring and light seal are cemented instead of screwed together with three screws; early samples have three screws in the focusing ring; earliest six-digit samples do not have an IR marker.

Mark IB: Product number 43501.

Variations: Diaphragm ring with fine knurls and running to f/22 with a ½-stop between f/16 and f/22, or with coarse knurls without the ½-stop;

The last samples were supplied with the new multi-coating, but lacked the full aperture metering mechanism.


Depth of Field Guide

 f/2·8f/3·5f/4f/4·5f/5·6f/6·7f/8f/9·5f/11f/13f/16f/19f/22
1·201·191·211·191·211·181·221·181·221·181·221·171·231·171·231·161·241·161·241·151·251·141·261·131·281·121·29
1·301·291·311·281·321·281·321·281·321·281·331·271·331·261·341·261·341·251·351·241·361·231·381·221·391·211·41
1·501·481·521·481·521·481·521·471·531·471·531·461·541·451·551·441·561·441·571·421·581·411·601·391·631·381·65
1·701·681·721·671·731·671·731·671·741·661·751·651·751·641·771·631·781·621·791·601·811·581·841·561·861·541·89
2·001·972·031·962·041·962·041·952·051·942·061·932·081·922·091·902·111·892·131·872·151·842·191·812·231·782·28
2·502·452·552·442·562·432·572·422·582·412·602·392·622·372·652·352·682·322·712·292·752·252·812·212·882·172·95
3·002·933·072·913·092·903·102·893·122·873·152·843·182·813·222·783·262·753·312·703·372·643·472·593·572·533·68
4·003·884·133·854·163·834·193·814·213·764·273·724·333·674·403·614·483·564·573·494·693·394·883·295·093·205·32
5·004·815·214·765·264·735·304·705·344·635·434·575·534·495·644·415·784·325·934·226·134·076·473·946·853·817·27
7·006·637·426·547·536·487·616·427·696·297·886·178·086·038·335·888·645·748·985·559·465·3010·305·0711·294·8612·51
10·009·2610·879·0911·128·9711·308·8611·488·6111·928·3912·388·1312·987·8613·757·6014·627·2815·966·8518·506·4722·016·1327·16
15·0013·3817·0713·0317·6712·7918·1412·5618·6212·0819·7911·6321·1211·1522·9310·6325·4510·1728·609·6034·258·8748·668·2484·007·69∞ 
30·0024·1439·6323·0143·0822·2745·9521·5849·2220·1958·3618·9771·6617·7198·0916·44∞ 15·35∞ 14·10∞ 12·56∞ 11·33∞ 10·31∞ 
∞ 77·61∞ 67·04∞ 61·10∞ 56·13∞ 47·60∞ 41·32∞ 35·75∞ 30·94∞ 27·27∞ 23·54∞ 19·54∞ 16·70∞ 14·58∞ 

(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.