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Thread: Macro lens on DSLR

  1. #1
    Member Koh Li Kuan's Avatar
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    Default Macro lens on DSLR

    Can anybody help??

    What will the magnification be for a macro lens (1:1) when used on a DSLR with focal multiplier of 1.6?

    Thanks
    likuan

  2. #2
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    magnification ratio is the same, since the FLM only crops the image. that is, if i'm not wrong.... feel free to correct me.

  3. #3
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    Originally posted by Larry
    magnification ratio is the same, since the FLM only crops the image. that is, if i'm not wrong.... feel free to correct me.
    I think so too... although this smells like a CoC fish...
    "I'm... dreaming... of a wide... angle~
    Just like the ones I used to know~"

  4. #4
    Member Koh Li Kuan's Avatar
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    OK...will try out the lens and let you guys know soon...

    Thanks for all your input.


    likuan

  5. #5
    vkm
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    Default Re: Macro lens on DSLR

    Originally posted by Koh Li Kuan
    What will the magnification be for a macro lens (1:1) when used on a DSLR with focal multiplier of 1.6?[/B]
    The magnification ratio is only affected by lens design and can be altered by using extension tubes, macro filters and teleconverters. Thus it will be the same 1:1. On the other hand DSLR has smaller frame size and therefore you can take full frame pictures of smaller objects.

    Example:

    10D with 23 x 15 mm sensor and 100/2.8 Macro can take full frame pictures of objects as small as 23mm x 15mm (which is 1:1 to the size of the sensor).

    EOS film body and the same lens can take full frame pictures down-to 36 x 24 mm only (also 1:1 to the film frame).

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