MINOLTA ACCESSORY LENSES AND LENS ADAPTERS

• W. Conversion Rokkor

  -- Designed exclusively for the Minolta ER SLR. Converts the built-in 45mm lens of the ER to a 35mm lens. It is recommended that only f-stops from f5.6 to f16 be used. Has a 72mm filter thread. Big hunk of glass and hard to find.

• T. Conversion Rokkor

  -- Designed exclusively for the Minolta ER SLR. Converts the built-in 45mm lens of the ER to an 85mm f5.6 lens. It is recommended that only f-stops from f5.6 to f16 be used. Has a 82mm filter thread. Big hunk of glass and hard to find.

• MC 2X CONVERTER for APO Tele Rokkor

  -- This was sold bundled with the MC 400mm f5.6 APO ROKKOR.  It does not change the minimum focus distance. It has five elements in three groups. Optically it is the same as the 200-L and the 300-L.

• 2X CONVERTER for MD APO Tele Rokkor

  -- Same as above.  Does not change the minimum focus distance. Despite the name, the converter was MC only. Has five elements in three groups. Optically it is the same as the 200-L and the 300-L.

• 2X TELE CONVERTER 200-L

  -- Doubles the focal length of any interchangeable SLR lens.  Designed for 200mm lenses and longer.  Does not change the minimum focus distance. The converter will couple with any MD lens, but it has MC function only. Has five elements in three groups. Optically it is the same as the 2X Tele Converter for APO Tele Rokkor and the 300-L.

• MD 2X TELE CONVERTER 300-S

  -- Doubles the focal length of any interchangeable SLR lens.  Designed for 300mm lenses and shorter.  Does not change the minimum focus distance.  Has seven elements in six groups. This converter will provide MC and MD functions.

• MD 2X TELE CONVERTER 300-L

  -- Doubles the focal length of any interchangeable SLR lens.  Designed for 300mm lenses and longer.  Does not change the minimum focus distance. Has five elements in three groups. Optically it is the same as the 2X Tele Converter for APO Tele Rokkor and the 200-L -- BUT, this converter has the MD coupling. There were two versions of this converter -- which are optically and structurally the same. The first model has the rubber waffling of the Rokkor-X series. The later model, which is quite scarce, has the waffling from the later MD Minolta series.

• LENS/MONOCULAR CONVERTER

  -- Magnifies the focal length of any interchangeable SLR lens by 10X.  For example, it turns a 50mm lens into a 500mm telescope.  A 500mm lens becomes a 5000mm telescope.  This accessory is not designed for use with a camera.  It turns your lens into a telescope.  Built-in diopter adjustment.

In addition, Minolta made several lens adapters.  

Most common is the L (Leica) adapter that allows Leica thread lenses to fit on any manual-focus Minolta camera.  Since Minolta camera bodies have a longer back focus than Leica lenses, the Leica thread lenses can only be used for close-up work.  But this adapter is more useful for bellows work.  It allows you to adapt any enlarging lens to any Minolta bellows for super-quality, super-closeup work.  

There was also a later C.E. adapter, which is basically an L adapter with a small, carefully-placed plate to cover up the illumination windows in the Minolta C.E. enlarging lenses.

Minolta also made a P (Pentax) adapter.  This allows any lens with a Pentax or Universal screw thread to work on a Minolta camera.  Since the back-focus distance is the same, these lenses can be used at any distance.  

Minolta also made an E (Exacta) adapter.  This allows any lens with an Exacta bayonet to work on a Minolta camera.  Since the back-focus distance is the same, these lenses can be used at any distance.  

Minolta made a reverse lens adapter.  This screws into the filter thread of the lens.  It has a Minolta bayonet mount on the other side, so the lens can be placed on the camera body BACKWARDS!  Why would you want to do this?  It provides extreme close-up focusing with or without a bellows.  These were available in 49mm and 55mm thread sizes.

There were also three adapters to convert microscope-threaded lenses onto the Minolta mount.  The M adapter was produced in the Leitz/Minolta era for the Photar lenses.  It has about 20mm of extension.  Later, Minolta made the flat M-1 Adapter for the Minolta Micro Bellows lenses and the M-2 Adapter which has about 40mm of extension, for the same lenses.

There was also a C-Adapter to adapt Minolta mount lenses onto movie cameras with a standard C-Mount.  

Leica also made an adapter that can be useful to Minolta users, especially those that use the CL or CLE cameras.  Called the Leitz Ring Nr. 22233, it allows you to place Minolta SLR lenses on Leica and Minolta M-mount cameras.  Unlike the Leica to Minolta adapter, this adapter maintains the infinity focus.  Similar adapters were made by other companies as well.

There are other types of adapters that Minolta users will find helpful.  Many lenses can be used on Minolta cameras that do not have Minolta mounts.  For example, Exacta lens can be used with an adapter (see above), and Minolta made an Exacta adapter. Similarly, many lenses were made with a generic T-mount, and these can be used on Minolta cameras if you have a Minolta T mount.  There are several types of T mounts, but they all will work on Minolta cameras.  

• T --  the original mount.  It was made by Tamron, and that's where the "T" comes from.  Just screw-in your T-mount lens, and it will fit on any camera.  Tamron eventually switched to the "Adaptall" system, because other companies copied the T-mount system.  T-mount lenses, when used on Minolta cameras, do not offer automatic diaphragm action.
• T2 -- on the original T-mount system you would screw-on the lens and the f-stop ring typically ended up on the bottom of the camera.  The T-2 system has three adjuster screws that allows you to rotate the lens and get those f-stops on top. T2-mount lenses, when used on Minolta cameras, do not offer automatic diaphragm action.
• T3 -- offers auto-diaphragm action
• T4 -- offers auto-diaphragm action with meter-coupling
• TX -- offers auto-diaphragm action with meter-coupling with MD function
• Adaptamatic -- Tamron's first mount to offer automatic diaphram action.
• Adaptall -- update to the Adaptamatic offering MC coupling.
• Adaptall-II -- updated to offer MD action

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