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Asahi Super-Takumar 1:3.5/28

Description and Review

Description, Notes & Specifications

Manufactured:	1962—1966
Camera Mount:	M42x1
Lens Elements / Groups:	7 / 6
Diaphragm Type:	automatic / manual
Diaphragm Blades:	5 / pentagonal
Angle of View:	75°
Maximum Aperture:	f/3·5
Minimum Aperture:	f/22 or f/16
Minimum Focus Distance:	0·40 metres
Magnification Factor:	—
Filter Size:	ø 58 mm (screw)
Length:	47 mm / 49 mm
Largest Diameter:	60 mm
Weight:	≈260 grams
Product Numbers:	348 / 43480 43481
Serial Number Range:	—
My Serial Number:	942828; 1609825

Super-Takumar 28mm f/3·5 — Super-wide-angle lens with an angle of view of 75° — designed and precision-made to meet the most exacting of the professional requirements.

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Distance engravings in yellow (metres) and blue (feet); snapshot indication with red letterings at f/8 and 3 metres / 10 feet.

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Mark IA: Distance scale with “7.5” engraved; diaphragm ring with fine knurls and running to f/22 with a ½-stop between f/11 and f/16; round lettering; order of the front bezel engravings are —

Asahi Opt. Co., Lens made in Japan [serial number] Super-Takumar 1:3.5/28

Mark IB: Distance scale with “7” engraved; diaphragm ring with coarse knurls running to f/16 and no ½-stop between f/11 and f/16; oval lettering; order of the front bezel engravings are —

Asahi Opt. Co., Lens made in Japan Super-Takumar 1:3.5/28 [serial number]

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Anomaly: Lens 1076549 has distance scale with “7.5” engraved; diaphragm ring with coarse knurls running to f/16; round lettering; order of the front bezel engravings are —

Asahi Opt. Co., Lens made in Japan [serial number] Super-Takumar 1:3.5/28

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Depth of Field Guide

	f/3·5		f/4		f/4·5		f/5·6		f/6·7		f/8		f/9·5		f/11		f/13		f/16		f/19		f/22
0·40	0·38	0·42	0·38	0·43	0·37	0·43	0·37	0·44	0·36	0·45	0·36	0·46	0·35	0·47	0·34	0·48	0·33	0·50	0·32	0·53	0·31	0·56	0·30	0·60
0·45	0·42	0·48	0·42	0·48	0·42	0·49	0·41	0·50	0·40	0·51	0·40	0·52	0·39	0·54	0·38	0·56	0·37	0·58	0·35	0·62	0·34	0·67	0·33	0·72
0·50	0·47	0·54	0·46	0·54	0·46	0·55	0·45	0·56	0·44	0·57	0·43	0·59	0·42	0·61	0·41	0·63	0·40	0·67	0·38	0·72	0·37	0·79	0·35	0·87
0·60	0·55	0·65	0·55	0·66	0·54	0·67	0·53	0·69	0·52	0·71	0·51	0·74	0·49	0·77	0·48	0·81	0·46	0·86	0·44	0·96	0·42	1·08	0·40	1·23
0·80	0·72	0·90	0·71	0·92	0·70	0·93	0·68	0·97	0·66	1·01	0·64	1·07	0·62	1·14	0·59	1·22	0·57	1·36	0·53	1·61	0·50	1·99	0·47	2·61
1·00	0·88	1·16	0·86	1·19	0·85	1·22	0·82	1·29	0·79	1·36	0·76	1·46	0·73	1·60	0·70	1·77	0·66	2·07	0·61	2·74	0·57	4·06	0·53	7·86
1·20	1·03	1·44	1·01	1·48	0·99	1·53	0·95	1·64	0·91	1·77	0·87	1·94	0·83	2·20	0·79	2·53	0·74	3·17	0·68	5·11	0·63	13·17	0·58	∞
1·50	1·24	1·90	1·21	1·97	1·18	2·06	1·12	2·26	1·07	2·51	1·01	2·89	0·95	3·49	0·90	4·42	0·84	6·85	0·76	∞	0·70	∞	0·65	∞
2·00	1·56	2·78	1·51	2·95	1·47	3·14	1·38	3·64	1·30	4·34	1·22	5·62	1·13	8·50	1·06	17·45	0·98	∞	0·87	∞	0·79	∞	0·72	∞
3·00	2·11	5·21	2·02	5·83	1·94	6·61	1·79	9·35	1·65	16·02	1·52	∞	1·39	∞	1·29	∞	1·16	∞	1·02	∞	0·91	∞	0·82	∞
7·50	3·63	∞	3·38	∞	3·16	∞	2·77	∞	2·46	∞	2·18	∞	1·92	∞	1·72	∞	1·51	∞	1·28	∞	1·10	∞	0·97	∞
∞	6·22	∞	5·52	∞	4·96	∞	4·06	∞	3·43	∞	2·91	∞	2·47	∞	2·14	∞	1·82	∞	1·49	∞	1·26	∞	1·09	∞

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

Review

Soft, even at f/8.

Recommended: No

Sample Photographs

References

1. Asahi Pentax: Lenses & Accessories [63008]
2. van Oosten, G. 1999. The Ultimate Asahi Pentax Screw Mount Guide. Uitgeverij Jansz.

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http://southerncape.co.za/recreation/photography/lenses/asahi/super-takumar_28mm_f35_i.php

22 August 2011