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Thread: What's The Difference?

  1. #1
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    Default What's The Difference?

    Whats the difference between a 2X teleconverter and a +4 close-up filter?

    Since both magnify by a factor of 2, whats the difference?
    Sony DSC-H2....its not the power of the camera, its the vision of the photographer....

  2. #2
    Moderator catchlights's Avatar
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    Default Re: What's The Difference?

    one can focus at infinite, another one can't
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  3. #3
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    Default Re: What's The Difference?

    The +4 close up can't?
    Sony DSC-H2....its not the power of the camera, its the vision of the photographer....

  4. #4

    Default Re: What's The Difference?

    Wait ... chope!

    This is not a trick question right?

  5. #5
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    Default Re: What's The Difference?

    2X teleconverter just double the focal length, and reduces the amt of light by a couple of stops, minimum focus distance unchanged, can focus at infinity

    close up filters dont reduce light significantly, allows you to focus closer, cannot focus at infinity.

    take for example 80-200mm + 2x converter, 160-400mm, you are still focussing at min 1.5 metres.

    80-200mm with a +2 close up filter, its 80-200mm, but now you are focussing at 0.75 metres.
    chezburgr i can haz?

  6. #6
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    Default Re: What's The Difference?

    a +4 filter lets you focus four times closer to the subject. ~ thus achieving magnification
    chezburgr i can haz?

  7. #7

    Default Re: What's The Difference?

    Quote Originally Posted by hairygorillaz View Post
    The +4 close up can't?
    Correct, with close-up filter, you cannot focus infinity.

    Main differences between TC and Closeup

    TC
    - double focal length, thus magnification increases
    - able to focus infinity
    - double min. focusing distance

    Close-up
    - focal length unchanged but able to focus nearer, thus magnification increases ( not sure formula )
    - unable to focus infinity
    - min. focusing distance is reduced and fixed, and depend on diopter value ( read below )

    For close-up or diopter info, pls refer to Macros & Close-ups FAQ#7
    Last edited by megaweb; 3rd January 2008 at 10:43 PM.
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  8. #8

    Default Re: What's The Difference?

    Teleconverters introduce light loss and some IQ degradation, but it also means you can snipe stuff with your now increased tele lens thanks to infinity focus. +4 close ups don't introduce light loss but they do tend to degrade IQ quite a lot unless you're using the expensive stuff.

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