Minolta MC W.Rokkor-SI 28mm F/2.5

Wide-angle prime lens • Film era • Discontinued

  • Announced:
  • · February 1969
  • Production status:
  • ● Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · MINOLTA MC W.ROKKOR-SI 1:2.5 f=28mm
  • Class:
  • · Fast full-frame wide-angle prime lens
  • System:
  • · Minolta SR (1958)

Abbreviations

MC The lens is coupled to the camera's TTL exposure meter for full-aperture measurement.

Model history (2)

■Minolta MC W.Rokkor-SI 28mm F/2.5A9 - 70.50m⌀55 1969 ●
■Minolta MC W.Rokkor[-SI] 28mm F/2.5 Gen. XA9 - 70.50m⌀55 1973 ●

Specification

Optical design:
35mm full frame
28mm
F/2.5
9 elements in 7 groups
Minolta SR [43.5mm]
75.4° (35mm full frame)
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings only)
6 (six)
Focusing:
0.50m
<No data>
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
340g
⌀64×61mm
Accessories:
Screw-type 55mm
Screw-type
Minolta MD 2X Tele Converter 300-S → 56mm F/5

Source of data

  • Own research.

Manufacturer description

The new MC Rokkor 28mm f2.5 can't be bettered for speed. It has a fully automatic diaphragm that couples to the SR-T 101 metering system. Plus patented "Achromatic" double coating and focusing from 1.5 feet to infinity. Nine elements in 7 groups, with a newly developed high index glass used to minimize aberrations over a 78 deg. field.

Other wide-angle prime lenses in the Minolta SR system

■Minolta SR mount (41)
Minolta MC W.Rokkor-SI 24mm F/2.8 Gen. XA9 - 70.30m⌀55 1973 ●
Minolta MC Rokkor 24mm F/2.8 VFC Gen. XA9 - 70.30m⌀55 1975 ●
Minolta MC W.Rokkor 24mm F/2.8 Gen. XA9 - 70.30m⌀55 1975 ●
Minolta MD W.Rokkor 24mm F/2.8A9 - 70.30m⌀55 1977 ●
Minolta MD Rokkor 24mm F/2.8 VFCA9 - 70.30m⌀55 1977 ●
Minolta MD W.Rokkor 24mm F/2.8A9 - 70.30m⌀55 1978 ●
Minolta MD W.Rokkor 24mm F/2.8A9 - 70.30m⌀55 1978 ●
Minolta MD 24mm F/2.8A8 - 80.25m⌀49 1981 ●
Minolta MD 24mm F/2.8 VFCA9 - 70.30m⌀55 1982 ●
Minolta Auto W.Rokkor-SG 28mm F/3.5A7 - 70.60m⌀67 1963 ●
Minolta MC W.Rokkor-SG 28mm F/3.5A7 - 70.60m⌀67 1966 ●
Minolta MC W.Rokkor-SG 28mm F/3.5A7 - 70.60m⌀55 1968 ●
Minolta MC W.Rokkor[-SG] 28mm F/3.5 Gen. XA7 - 70.60m⌀55 1973 ●
Minolta MC W.Rokkor 28mm F/3.5 Gen. XA5 - 50.30m⌀55 1975 ●
Minolta MD W.Rokkor 28mm F/3.5A5 - 50.30m⌀55 1977 ●
Minolta MD W.Rokkor 28mm F/3.5A5 - 50.30m⌀49 1978 ●
Minolta MD 28mm F/3.5A5 - 50.30m⌀49 1981 ●
Minolta MC W.Rokkor 28mm F/2.8 Gen. XA7 - 70.30m⌀55 1974 ●
Minolta MD W.Rokkor 28mm F/2.8A7 - 70.30m⌀55 1977 ●
Minolta MD W.Rokkor 28mm F/2.8A7 - 70.30m⌀49 1978 ●
Minolta MD 28mm F/2.8A7 - 70.30m⌀49 1981 ●
Minolta MD 28mm F/2.8A5 - 50.30m⌀49 1983 ●
Minolta MC W.Rokkor[-SI] 28mm F/2.5 Gen. XA9 - 70.50m⌀55 1973 ●
Minolta MC W.Rokkor 28mm F/2 Gen. XA10 - 90.30m⌀55 1975 ●
Minolta MD W.Rokkor 28mm F/2A10 - 90.30m⌀55 1977 ●
Minolta MD 28mm F/2A9 - 90.30m⌀49 1981 ●
Minolta W.Rokkor-QE 35mm F/4P5 - 40.40m⌀55 1960 ●
Minolta W.Rokkor-QE 35mm F/4 CompactP5 - 40.40m⌀52 1965 ●
Minolta Auto W.Rokkor-HG 35mm F/2.8A7 - 60.25m⌀55 1959 ●
Minolta Auto W.Rokkor-HG 35mm F/2.8A7 - 60.40m⌀55 1962 ●
Minolta Auto W.Rokkor-HG 35mm F/2.8 CompactA7 - 60.40m⌀52 1965 ●
Minolta MC W.Rokkor-HG 35mm F/2.8A7 - 60.40m⌀52 1966 ●
Minolta MC W.Rokkor[-HG] 35mm F/2.8 Gen. XA7 - 60.40m⌀55 1973 ●
Minolta MC W.Rokkor 35mm F/2.8 Gen. XA5 - 50.30m⌀55 1975 ●
Minolta MD W.Rokkor 35mm F/2.8A5 - 50.30m⌀55 1977 ●
Minolta MD W.Rokkor 35mm F/2.8A5 - 50.30m⌀49 1978 ●
Minolta MD 35mm F/2.8A5 - 50.30m⌀49 1981 ●
Minolta MC W.Rokkor-HH 35mm F/1.8A8 - 60.30m⌀55 1968 ●
Minolta MC W.Rokkor[-HH] 35mm F/1.8 Gen. XA8 - 60.30m⌀55 1973 ●
Minolta MD W.Rokkor 35mm F/1.8A8 - 60.30m⌀49 1978 ●
Minolta MD 35mm F/1.8A8 - 60.30m⌀49 1981 ●

Lenses with similar focal length

■Minolta SR mount (52)
Chinar 28mm F/2.8 [M.C]
akaHanimex Automatic 28mm F/2.8		A7 - 70.40m⌀52 ●
Chinon 24mm F/2.5 Multi Coated
akaAuto-Alpa 24mm F/2.5 Multi-Coated		A10 - 90.25m⌀55 ●
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 ●
Hanimex Wide-Auto 28mm F/2.8A7 - ?0.45m⌀58 ●
Hanimex Automatic 28mm F/2.8 MCA8 - 70.30m⌀55 ●
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 Type 1A8 - 70.30m⌀62 ●
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 ●
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 ●
Tamron-F [Auto] 28mm F/2.8A7 - 70.25m⌀52 ●
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 Auto Wide Angle 28mm F/2.5 "Bright Band" (s/n 22xxxxxx)A8 - 70.30m⌀62 1968 ●
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 ●
■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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