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Thread: What does the mm mean?

  1. #21
    Senior Member
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    Default Re: What does the mm mean?

    Quote Originally Posted by Spectrum
    There's certain calculations from a 35mm lens to MF/LF body system. But why want to know when you can't even use most this lenses on the MF/LF body?
    Pros out there do correct me if I'm wrong. Thank you.
    i thinking of getting MF lens to use on 135...

    so if i use a 45mm MF lens on a 135, does it equate to 24mm on 135? (suppose i can find a adapter to fit the lens on the 135 body.)
    Logging Off. "You have 2,631 messages stored, of a total 400 allowed." don't PM me.

  2. #22
    Moderator catchlights's Avatar
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    Default Re: What does the mm mean?

    Quote Originally Posted by Del_CtrlnoAlt
    i thinking of getting MF lens to use on 135...

    so if i use a 45mm MF lens on a 135, does it equate to 24mm on 135? (suppose i can find a adapter to fit the lens on the 135 body.)
    No, it has a 45mm lens FOV on 35mm camera, so become like a std lens on 35mm camera.

  3. #23

    Default Re: What does the mm mean?

    1. Focal length never changes
    2. FOV is determined by size of the image format
    3. Lenses built for larger formats have larger imaging circles that's all.

  4. #24
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    Default Re: What does the mm mean?

    Quote Originally Posted by Zerstorer
    1. Focal length never changes
    2. FOV is determined by size of the image format
    3. Lenses built for larger formats have larger imaging circles that's all.
    So you can notice why diff formats of MF body also got a range of lenses to support. Diff format, diff lenses (I think).

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