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  1. #21

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    I think I recall somewhere that lenses marked anastigmat are typically uncoated, not that anastigmat means uncoated, but just that it turns out that most anastigmats were not coated.

    Of course, anastigmat means, literally, without astigmatism, so I suppose the optics were designed and computed to minimize astigmatism.

  2. #22

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    Quote Originally Posted by alanrockwood View Post
    I think I recall somewhere that lenses marked anastigmat are typically uncoated, not that anastigmat means uncoated, but just that it turns out that most anastigmats were not coated.

    Of course, anastigmat means, literally, without astigmatism, so I suppose the optics were designed and computed to minimize astigmatism.
    Lenses marked "Anastigmat" are typically uncoated because they were made before lens coatings were commercially available. No other reason. There were post WWII lenses marked so which were coated, as well.

    The designation "Anastigmat" became popular - and possible - when new glasses were developed in the late 1880s at Schott Jena, these glasses allowed lenses to be corrected for astigmatism. Marketing being what it is, the term was used to designate highly corrected lenses made with the new glasses, also to differentiate the new lenses from the Rapid-Rectilinear type which was un- or partially corrected for astigmatism.

    The likelyhood is that both of the OP's lenses are uncoated.

  3. #23

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    Quote Originally Posted by Dan Fromm View Post
    Tim, for you, 3x4 means 3.25" x 4.25". Upper end of MF, according to the people who think that 4" x 5" is the smallest LF format.

    The Ihagee Parvola shoots nominal 30 x 40 mm on 127 film. You can look it up.
    My mistake.

    I do have cameras that shoot 127 3x4 format as well as half format.

    Anywhooooo, people who think 3.25x4.25 is medium format are... mistaken.

    tim in san jose
    Where ever you are, there you be.

  4. #24

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    Quote Originally Posted by k_jupiter View Post
    My mistake.

    I do have cameras that shoot 127 3x4 format as well as half format.

    Anywhooooo, people who think 3.25x4.25 is medium format are... mistaken.

    tim in san jose
    Large format is 20 square inches or larger. Period.

  5. #25

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    Total film dimensions or the per frame image dimensions?

  6. #26

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    Quote Originally Posted by BrianShaw View Post
    Total film dimensions or the per frame image dimensions?
    Film size.

  7. #27

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    so when I make a single image with 120 film using overlapping frames (a la' Oliver Gagliani) I'm shooting LF? Ha ha ha

  8. #28

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    Quote Originally Posted by BrianShaw View Post
    so when I make a single image with 120 film using overlapping frames (a la' Oliver Gagliani) I'm shooting LF? Ha ha ha
    Don't be silly!!

  9. #29

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    Quote Originally Posted by E. von Hoegh View Post
    Large format is 20 square inches or larger. Period.
    Why thank you god of film sizes. That position and $2.25 will get you a large cup of coffee at *$s.



    tim in san jose
    Where ever you are, there you be.

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