smc Pentax-M 28mm F/3.5

Wide-angle prime lens • Film era • Discontinued

  • Announced:
  • · 1977
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · ASAHI OPT. CO. SMC PENTAX-M 1:3.5 28mm
  • Class:
  • · Slow full-frame wide-angle prime lens
  • System:
  • · Pentax K (1975)

Abbreviations

SMC Multi-layer anti-reflection coating is applied to the surfaces of lens elements. This anti-reflection coating increases light transmission, eliminates flare and ghosting, and maintains color consistence among all lens models.
M A manual focus lens with automatic maximum aperture indexing, which is a mechanical system for coupling the lens to the camera's exposure system. More compact and lighter than the standard K-series counterpart, but with no sacrifice in quality of construction, resolution, durability or contrast. Learn more

Model history (5)

■Asahi Super-Takumar 28mm F/3.5 [348, 43480, 43481]A7 - 60.40m⌀58 1962 ●
■Asahi Super-Takumar 28mm F/3.5 [43871]A7 - 70.40m⌀49 1966 ●
■Asahi Super-Multi-Coated Takumar 28mm F/3.5 [43872]A7 - 70.40m⌀49 1971 ●
■smc Pentax 28mm F/3.5A8 - 70.30m⌀52 1976 ●
■smc Pentax-M 28mm F/3.5A6 - 60.30m⌀49 1977 ●

Specification

Optical design:
35mm full frame
28mm
F/3.5
6 elements in 6 groups
Pentax K [45.5mm]
75.4° (35mm full frame)
On Pentax K APS-C [1.53x] cameras:
35mm equivalent focal length:
42.8mm (in terms of field of view)
35mm equivalent speed:
F/5.4 (in terms of depth of field)
Diagonal angle of view:
53.6°
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
5 (five)
Focusing:
0.30m
1:7.7
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
180g
⌀63×31.5mm
Accessories:
Screw-type 49mm
PH-S49 - Clamp-on rectangular
<No data>

Sources of data

  • Manufacturer's technical data.
  • Asahi Pentax series lenses and accessories booklet (PUB. 06771, 60 pages).
  • Honeywell Hot Line Newsletter.
  • Asahi Pentax MX booklet (PUB. 06241).
  • Pentax MV booklet (PUB. 06021).
  • Pentax MV1 booklet (PUB. 06036).
  • The many eyes of Pentax booklet (PUB. 06071).
  • Asahi Pentax ME booklet (PUB. 06006).
  • Pentax ME Super booklet (PUB. 06731).
  • Asahi Pentax smc Pentax lenses booklet.

Manufacturer description

Lightweight, compact and economical, this superb lens enables the user to obtain dramatic wide angle effects and expand the field of view while being able to limit his investment and overall camera bulk. Has 6 elements in 6 group construction and utilizes 49mm filters.

Pentax-M series

The second generation of lenses designed for Asahi Pentax 35mm SLR cameras with bayonet mount. Introduced with Asahi Pentax ME and MX in 1976.

  • Miniaturized lenses with average 20% less weight and length than their standard SMC counterparts, but with no sacrifice in quality of construction, resolution, durability or contrast;
  • Robust, all-metal design with recessed focusing distance scale;
  • Fully automatic diaphragm;
  • Support for TTL open-aperture metering;
  • Extremely accurate manual focusing with rubberized focusing ring;
  • Multi-layer anti-reflection coating.

Other wide-angle prime lenses in the Pentax K system

■Pentax K mount (18)
smc Pentax 24mm F/3.5A9 - 80.25m⌀58 1975 ●
smc Pentax 24mm F/2.8A9 - 80.25m⌀52 1977 ●
smc Pentax-A 24mm F/2.8A9 - 80.25m⌀52 1983 ●
smc Pentax 28mm F/3.5A8 - 70.30m⌀52 1976 ●
smc Pentax-M 28mm F/2.8 [I]A7 - 70.30m⌀49 1977 ●
smc Pentax-M 28mm F/2.8 [II]A7 - 70.30m⌀49 1982 ●
smc Pentax-A 28mm F/2.8A7 - 70.30m⌀49 1983 ●
smc Pentax 28mm F/2A9 - 80.30m⌀52 1976 ●
smc Pentax-M 28mm F/2A8 - 70.30m⌀49 1980 ●
smc Pentax-A 28mm F/2A8 - 70.30m⌀49 1983 ●
smc Pentax 30mm F/2.8A7 - 70.30m⌀52 1975 ●
smc Pentax 35mm F/3.5A5 - 40.35m⌀52 1975 ●
smc Pentax-M 35mm F/2.8A6 - 60.30m⌀49 1977 ●
smc Pentax-A 35mm F/2.8A6 - 60.30m⌀49 1983 ●
smc Pentax 35mm F/2A8 - 70.35m⌀52 1975 ●
smc Pentax-M 35mm F/2A7 - 70.30m⌀49 1977 ●
smc Pentax-A 35mm F/2A7 - 70.30m⌀49 1983 ●
smc Pentax-M 40mm F/2.8 • Pancake lensA5 - 40.60m⌀49 1976 ●

Lenses with similar focal length

■Pentax K mount (60)
Chinar 28mm F/2.8 [M.C]
akaHanimex Automatic 28mm F/2.8		A7 - 70.40m⌀52 ●
Chinon Auto 28mm F/2.8 Multi-Coated
akaAgfa Color 28mm F/2.8 Multi-Coated		A7 - 70.30m⌀49 1979 ●
Cosina 24mm F/2.8 MC Macro
akaCarl Zeiss Jena II 24mm F/2.8 MC Macro
akaPhoenix 24mm F/2.8 Macro		A7 - 70.19m⌀52 ●
Cosina 28mm F/2.8 MC Macro
akaCarl Zeiss Jena II 28mm F/2.8 MC Macro
akaPhoenix 28mm F/2.8 Macro
akaVivitar Wide Angle 28mm F/2.8 MC		A5 - 50.22m⌀49 ●
Cosina Cosinon-W 28mm F/2 MC
akaPetri 28mm F/2 MC		A8 - 70.30m⌀49 1981 ●
Cosina Cosinon-W 24mm F/2.8 MCA7 - 70.25m⌀49 1981 ●
Cosina Cosinon-W 28mm F/2.8 MC
akaBauer Neovaron 28mm F/2.8 Multicoated
akaCarl Zeiss Jena 28mm F/2.8 MC
akaMiranda 28mm F/2.8 MC
akaVivitar Auto 28mm F/2.8 VMC		A6 - 60.30m⌀49 1981 ●
Hanimex Automatic 28mm F/2.8 MCA8 - 70.30m⌀55 ●
Irix 30mm F/1.4 SLRA13 - 110.34m⌀86 2021 ●
Kino Precision Kiron 24mm F/2 MCA8 - 80.30m⌀55 1980 ●
Kino Precision Kiron 28mm F/2 MCA8 - 80.30m⌀55 1980 ●
Kino Precision Kiron 28mm F/2.8 MCA? - ?0.30m⌀55 1980 ●
Panagor Auto Wide-Angle 28mm F/2.8 PMCA7 - 60.30m⌀49 ●
Panagor Auto Wide Angle 28mm F/2.5 [PMC] Type 2A8 - 70.30m⌀67 ●
Panagor Auto Wide-Angle 28mm F/2 PMCA8 - 80.30m⌀55 ●
Panagor Auto Wide-Angle 24mm F/2.5 PMCA? - ?0.30m⌀55 ●
Quantaray 28mm F/2.8 MCA? - ?0.30m⌀49 ●
Ricoh XR Rikenon 28mm F/3.5 Aspheric • Pancake lensA5 - 40.35m⌀52 ●
Ricoh XR Rikenon 28mm F/2.8A7 - 70.30m⌀52 1980 ●
Ricoh XR Rikenon 24mm F/2.8A7 - 70.18m⌀52 1982 ●
Ricoh XR Rikenon 28mm F/3.5A6 - 60.30m⌀52 1977 ●
Ricoh Rikenon P 28mm F/2.8A7 - 70.30m⌀52 1984 ●
Ricoh Rikenon P 28mm F/2.8 MacroA5 - 50.22m⌀49 ●
Sigma MF Super-Wide 24mm F/2.8 Multi-Coated IIA8 - 70.18m⌀52 1988 ●
Sigma MF High-Speed Wide 28mm F/1.8 Aspherical II ZENA9 - 80.30m⌀58 1994 ●
Sigma MF High-Speed Wide 28mm F/1.8 Aspherical Multi-Coated ZENA9 - 80.30m⌀58 1990 ●
Sigma MF Mini-Wide 28mm F/2.8 Multi-Coated II
akaQuantaray 28mm F/2.8 Multi-Coated		A6 - 60.22m⌀52 1985 ●
Sigma MF H.L. Wide 28mm F/2.8 Multi-CoatedA8 - 70.22m⌀52 1984 ●
Sigma MF Super-Wide 24mm F/2.8 Multi-CoatedA7 - 70.18m⌀52 1981 ●
Sigma MF Mini-Wide 28mm F/2.8 Multi-Coated
akaPentacon Prakticar PM 28mm F/2.8 MC		A7 - 60.22m⌀52 1978 ●
Sigma[-XQ] MF 28mm F/2.8 Filtermatic Multi-CoatedA8 - 70.35m⌀52 1978 ●
Sigma[-XQ] MF 24mm F/2.8 Filtermatic Multi-CoatedA10 - 80.25m⌀62 1978 ●
Sigma-Z MF 24mm F/2.8 [Multi-Coated]A10 - 80.25m⌀62 1975 ●
Sigma-Z MF 28mm F/2.8 [Multi-Coated]A7 - 60.40m⌀62 1975 ●
Soligor C/D 28mm F/2 P (s/n 1xxxxxxx)A8 - 70.23m⌀58 1974 ●
Soligor G/S Wide-Auto 24mm F/2.5 MC (s/n 3xxxxxx)A9 - 70.30m⌀55 ●
Soligor G/S Wide-Auto 28mm F/2.5 MC (s/n 3xxxxxx)A8 - 80.30m⌀52 ●
Soligor C/D 28mm F/2.8 MCA7 - 60.40m⌀58 ●
Soligor C/D 28mm F/2.8 (s/n 1xxxxxxx)A7 - 70.30m⌀52 ●
Soligor Wide-Auto 28mm F/2.8 (s/n 1xxxxxxx)A7 - 60.30m⌀58 ●
Soligor C/D Dualfocal 28+35mm F/3.5+3.8 MCA9 - 90.40m⌀52 1981 ●
Tokina SL 28mm F/2.8A5 - 50.30m⌀49 ●
Tokina SL 24mm F/2.8 [II]A7 - 70.19m⌀52 ●
Tokina 24mm F/2.8 RMC
akaTokina SL 24mm F/2.8 [I]		A8 - 80.27m⌀52 ●
Tokina 28mm F/2.8 RMC
akaVoigtlander Color-Skoparet 28mm F/2.8 MC		A5 - 50.30m⌀52 ●
Vivitar Series 1 Auto Wide Angle 28mm F/1.9 VMC (s/n 37xxxxxx)A9 - 80.30m⌀58 1976 ●
Vivitar [Auto] Wide-Angle 24mm F/2 [MC] Compact (s/n 22xxxxxx)A8 - 80.30m⌀55 1978 ●
Vivitar [Auto] Wide-Angle 28mm F/2 [MC] Compact (s/n 22xxxxxx)A8 - 80.30m⌀55 1978 ●
Vivitar Auto Wide-Angle 28mm F/2.5 Type 2 (s/n 22xxxxxx)A8 - 70.30m⌀67 ●
Vivitar Auto Wide-Angle 28mm F/2.5 Type 1 (s/n 22xxxxxx)A8 - 70.30m⌀62 1969 ●
Vivitar [Auto] Wide Angle 28mm F/2.8 [MC] Compact [I] (s/n 28xxxxxx)A7 - 70.30m⌀49 ●
Vivitar Wide Angle 28mm F/2.8 MC Compact [II] (s/n 42xxxxxx)A7 - 70.30m⌀49 1983 ●
Vivitar Wide Angle 28mm F/2 MC Close Focus (s/n 28xxxxxx)A8 - 70.23m⌀49 1983 ●
Vivitar Wide Angle 28mm F/2.8 MC Close Focus (s/n 28xxxxxx)A5 - 50.23m⌀49 ●
Vivitar Wide Angle 24mm F/2.8 MC (s/n 9xxxxxxx)A7 - 70.19m⌀52 ●
Vivitar Auto Wide-Angle 24mm F/2.8 (s/n 37xxxxxx)A8 - 70.25m⌀58 1976 ●
Vivitar Wide Angle 24mm F/2 MC Compact (s/n 28xxxxxx)A8 - 80.30m⌀52 ●
Vivitar Wide Angle 28mm F/2.8 MC (s/n 9xxxxxxx)A5 - 50.23m⌀49 ●
Vivitar Wide Angle 28mm F/2.8 MC (s/n 61xxxxxx)A? - ?⌀52 ●
Carl Zeiss Classic Distagon T* 25mm F/2.8 ZF / ZF.2 / ZK / ZSA10 - 80.17mE58 2006 ●
■Interchangeable mount (25)
Hanimex 28mm F/2.8 [T]
akaHanimex 28mm F/3		P7 - ?0.45m⌀58 ●
Sankyo Kohki W-Komura 28mm F/3.5 [Unidapter]P6 - ?0.40m⌀55 ●
Sankyo Kohki W-Komura 24mm F/3.5 [Unidapter Auto]A7 - ?0.26m⌀52 ●
Sankyo Kohki W-Komura 28mm F/3.5 [Unidapter Auto]A8 - ?0.30m⌀52 ●
Komuranon 24mm F/2.5 K·M·CA11 - 80.26m⌀58 1974 ●
Komuranon 28mm F/2.5 K·M·CA9 - 70.30m⌀58 1974 ●
Sigma[-XQ] MF [Wide] 24mm F/2.8 Filtermatic [Multi-Coated] [YS]A10 - 80.20m⌀62 1972 ●
Sigma MF Widemax 28mm F/2.8 [Multi] [YS]A7 - 60.30m⌀62 1970 ●
Soligor Wide-Auto 28mm F/2.8 (s/n 1xxxxxxx) [T-4]A7 - 60.30m⌀58 ●
Soligor Wide-Auto 24mm F/2.8 (s/n 1xxxxxxx) [T-4]A8 - 70.30m⌀67 ●
Soligor Wide Angle 28mm F/2.8 [T]P6 - 63.5 ft.⌀58 ●
Mir-10A 28mm F/3.5 [T]
akaМИР-10А 28mm F/3.5		P8 - 70.20m⌀67 ●
Tamron 24mm F/2.5 MC 01B [Adaptall-2]A10 - 90.25m⌀55 1979 ●
Tamron 24mm F/2.5 01BB [Adaptall-2]A10 - 90.25m⌀55 1987 ●
Tamron 28mm F/2.5 MC 02B [Adaptall-2]A7 - 70.25m⌀49 1979 ●
Tamron 24mm F/2.5 CW-24 [Adaptall]A10 - 90.25m⌀55 1976 ●
Tamron 28mm F/2.8 CW-28 [Adaptall]A7 - 70.25m⌀52 1976 ●
Tamron Auto 24mm F/3.5 [Adapt-A-Matic]A8 - 60.25m⌀72 1971 ●
Tamron Auto 28mm F/2.8 [Adapt-A-Matic]A7 - 70.22m⌀62 1969 ●
Tamron Auto 28mm F/2.8 [Adapt-A-Matic]A7 - 70.22m⌀58 1972 ●
Vivitar Wide Angle 28mm F/2.5 [T]P8 - 70.30m⌀62 ●
Vivitar Auto Wide-Angle 28mm F/2.8 (s/n 37xxxxxxx) [T-4]A7 - 60.30m⌀58 1968 ●
Vivitar Auto Wide-Angle 24mm F/2.8 (s/n 37xxxxx) [T-4]A8 - 70.30m⌀67 ●
Vivitar Auto Wide-Angle 28mm F/2.5 (s/n 37xxxxxx) [TX]A7 - 70.24m⌀52 1976 ●
Vivitar Auto Wide-Angle 24mm F/2.8 (s/n 37xxxxxx) [TX]A8 - 70.23m⌀58 1976 ●

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