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  1. #11

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    Stansards are used everywhere. The film formats, or glass plate film formats were most often 9x12 cm ( easily to see with your eye, an an harmonic relation: 3x 4). The 4x5" is near to hat but the harmonic relation is 4x5. This is, I think the basis, and has still most lenses available. The others are related, but still harmonic. the other formats, like the 120 film is not known to me. The 35 mm film is again harmonic , 2x3.

    Jed

  2. #12

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    Quote Originally Posted by StoneNYC View Post
    I wish it were all in metric sizes personally...


    ~Stone | Sent w/ iPhone using Tapatalk
    Commie bastard! (not a real answer).

  3. #13
    cliveh's Avatar
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    It could be questioned why we use rectangle and square frames at all. The picture produced by a lens is circular with fall off towards the edges. It is only our obsession with Euclidian geometry that makes us frame images the way we do.

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  4. #14

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    The circle is part of Euclidean geometry.

  5. #15
    cliveh's Avatar
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    Quote Originally Posted by Michael R 1974 View Post
    The circle is part of Euclidean geometry.
    OK, just the angle bit.

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  6. #16
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    Quote Originally Posted by brianmquinn View Post
    Commie bastard! (not a real answer).
    The metric system was invented by communists? This is new to me LOL

    6x7mm is REALLY close to 4x5 inches, John would argue this, but whatever the theoretical exposed area, on both of my 6x7 120 cameras the exposed area is almost perfectly 4x5 ratio.

    Quote Originally Posted by Michael R 1974 View Post
    The circle is part of Euclidean geometry.
    Hehe


    ~Stone | Sent w/ iPhone using Tapatalk
    ~Stone | "...of course, that's just my opinion. I could be wrong." ~Dennis Miller

  7. #17

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    http://en.wikipedia.org/wiki/Film_format

    there seems to have been several things going on
    some of the sizes were based on whole plate sizes and some of them were based on manufactured plate sizes ..
    the sheet film sizes it seems were linked to dry plate / glass plate sizes
    so when manufacturers were making glass plates camera makers began to standardize
    on sizes ...
    and sheet film, is smaller than paper and plates because there were a zillion plate holders out there still in use
    and people who started using sheet film just bought a little metal sheath that slid into the plate holder and converted it
    to film ... when plates went by the wayside, there was no point in making new holders &c since everyone ( manufacturers, users &c ) had grown
    accustomed to the sheets beeing 1/16th" smaller than plates ...
    bigger than 8x10 seems to have standardized in both english and metric, but because there was never a mass-market business for ULF sizes
    they were just varied and sort of based on 8x10 and 11x14 ( guessing )
    ... 7x11, 11x14 ( half ) and 5x7 is around-1/4 a 11x14
    ... 8x20 ( pano double 8x10 )16x20 ( quad 8x10 )
    ... 12x20, 20x24 and their metric cousins ...

    ... too many others to list and guess about seeing



    whenever kodak made a "new" box camera that took roll film, they created a new roll film format
    so the film was proprietary and users had to buy the film from them ...
    probably the current roll film formats are just based on the old sheet film sizes that are similar,
    or PAPER sizes used for enlarging on ...
    and 6x6 cm, was probably just .. random like everything else seems to be

    " 3x7/8 x 5 7/16 looks like a good format, lets make it and see if it sells ... "
    Last edited by jnanian; 07-11-2013 at 07:57 PM. Click to view previous post history.
    if my apug gallery looks empty you might check these places

    website
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  8. #18

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    Quote Originally Posted by StoneNYC View Post
    I wish it were all in metric sizes personally...


    ~Stone | Sent w/ iPhone using Tapatalk
    Metric Schmetric. Phooey.

  9. #19
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    Quote Originally Posted by Tom1956 View Post
    Metric Schmetric. Phooey.
    US exceptionalism?
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  10. #20
    Klainmeister's Avatar
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    I prefer my measurements to arbitrary and difficult to remember. YMMV
    K.S. Klain

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