Minolta MD Rokkor 45 mm 1:2

Discussion in 'Minolta' started by Olaf Ulrich, Jan 7, 2004.

  1. Olaf Ulrich

    Olaf Ulrich Guest

    A few weeks ago, there was a discussion about the above-mentioned
    Minolta 45 mm lens. Here are the facts:

    It's a very good lens, but not Minolta's best.

    There is no technical difference between the MD Rokkor and the
    MD Rokkor-X. The '-X' just means that the lens originally was
    exported to North America. In Rokkor lenses made between 1972
    and 1981, Minolta made a difference between lenses sold in USA or
    Canada, and lenses sold elsewhere. The difference, however, was only
    in the front-ring writing. It had to do with marketing and control of
    'grey,' inofficial distribution channels. The '-X' has no technical sig-
    nificance whatsoever.

    Of course, the MD Rokkor(-X) 45 mm 1:2 *is* multi-coated, just as
    any Rokkor lens.

    The MD Rokkor(-X) 45 mm 1:2 is not a Tessar type but a common
    modified Gauss type, just as any 50 mm, 55 mm, or 58 mm standard
    lens. It has six elements in five groups. The section diagram looks just
    like that of the MD Rokkor(-X) 50 mm 1:1.7, it's just slightly smaller.
    The diaphragm has five blades, the filter size is 49 mm, the closest
    focusing distance is 0.6 m (= 2 ft).

    Back in the early '60s, Minolta made another 45 mm lens for their SR
    bayonet mount---the Rokkor-TD 45 mm 1:2.8, also known as the 'pan-
    cake lens.' This was a Tessar type indeed but the modern MD Rokkor
    45 mm 1:2 is a completely different thing. The old pancake lens is a
    sought-after collector's item today, not because it was so good (it is
    fairly good but nothing special) but due to its rarity. The modern
    45 mm lens is not rare; you can pick one up off eBay every day for
    a song.

    Olaf Ulrich, Jan 7, 2004
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