Difference between revisions of "Minolta SR mount"

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'''Minolta SR mount''' describes all [[Minolta]] 35mm [[SLR]] camera bodies with a bayonet mount for interchangeable manual focusing lenses, and all lenses designed to attach directly to these. All lenses for these bayonets built after 1961 are interchangeable between older and newer Minolta MF-SLR bodies (the lenses before 1961 feature a slightly different aperture leverage, and thus the automatic diaphragm may not work correctly). Three major stages have to be distinguished:
 
'''Minolta SR mount''' describes all [[Minolta]] 35mm [[SLR]] camera bodies with a bayonet mount for interchangeable manual focusing lenses, and all lenses designed to attach directly to these. All lenses for these bayonets built after 1961 are interchangeable between older and newer Minolta MF-SLR bodies (the lenses before 1961 feature a slightly different aperture leverage, and thus the automatic diaphragm may not work correctly). Three major stages have to be distinguished:
  
#. 1958-1966: Plain '''SR'''-bayonet featuring automatic diaphragm. Lenses are labelled ''Rokkor'' (pre-set) or ''Auto Rokkor'' (automatic diaphragm)
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# 1958-1966: Plain '''SR'''-bayonet featuring automatic diaphragm. Lenses are labelled ''Rokkor'' (pre-set) or ''Auto Rokkor'' (automatic diaphragm)
#. 1966-1977: Meter coupling added (often called '''MC''' bayonet) allowing full-aperture TTL measurement. Lenses are labelled ''MC Rokkor.''
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# 1966-1977: Meter coupling added (often called '''MC''' bayonet) allowing full-aperture TTL measurement. Lenses are labelled ''MC Rokkor.''
#. 1977-1998: '''MD''' lever added, which allows the reading of the smallest available aperture, often referred to as MD bayonet. Lenses are labelled ''MD'' or ''MD Rokkor.''
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# 1977-1998: '''MD''' lever added, which allows the reading of the smallest available aperture, often referred to as MD bayonet. Lenses are labelled ''MD'' or ''MD Rokkor.''
  
 
The '''SR''' models from 1958 to 1967 featured stage one of the SR bayonet. These were simple mechanical cameras without TTL metering or automatic exposure. The [[Minolta SR-7|SR-7]] was the only one with a built-in CdS meter, but that sat on the side of the camera body and thus had the same metering capabilities as the external clip-on meters available for [[Minolta SR-1|SR-1]] and [[Minolta SR-3|SR-3]].
 
The '''SR''' models from 1958 to 1967 featured stage one of the SR bayonet. These were simple mechanical cameras without TTL metering or automatic exposure. The [[Minolta SR-7|SR-7]] was the only one with a built-in CdS meter, but that sat on the side of the camera body and thus had the same metering capabilities as the external clip-on meters available for [[Minolta SR-1|SR-1]] and [[Minolta SR-3|SR-3]].

Revision as of 15:12, 4 January 2007

Minolta SR mount describes all Minolta 35mm SLR camera bodies with a bayonet mount for interchangeable manual focusing lenses, and all lenses designed to attach directly to these. All lenses for these bayonets built after 1961 are interchangeable between older and newer Minolta MF-SLR bodies (the lenses before 1961 feature a slightly different aperture leverage, and thus the automatic diaphragm may not work correctly). Three major stages have to be distinguished:

  1. 1958-1966: Plain SR-bayonet featuring automatic diaphragm. Lenses are labelled Rokkor (pre-set) or Auto Rokkor (automatic diaphragm)
  2. 1966-1977: Meter coupling added (often called MC bayonet) allowing full-aperture TTL measurement. Lenses are labelled MC Rokkor.
  3. 1977-1998: MD lever added, which allows the reading of the smallest available aperture, often referred to as MD bayonet. Lenses are labelled MD or MD Rokkor.

The SR models from 1958 to 1967 featured stage one of the SR bayonet. These were simple mechanical cameras without TTL metering or automatic exposure. The SR-7 was the only one with a built-in CdS meter, but that sat on the side of the camera body and thus had the same metering capabilities as the external clip-on meters available for SR-1 and SR-3.

With the introduction of the famous SR-T 101 in 1966, stage two was introduced featuring a meter coupling between pre-set aperture on lens and camera body. The camera had two CdS cells in the prism and metered the exposure through the lens (TTL). The later X-1 and XE models added an aperture-priority automatic exposure mode.

The third stage of SR mount was introduced in 1977 with the XD series. It added a tiny lever, which made the smallest aperture of an MD lens available to the camera electronics for an automatic control of the diaphragm. That enabled the S (shutter priority automatic exposure) mode on XD models and the P (programmed automatic exposure) mode on the X-700.

See also the Minolta SR mount category.