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Thread: ND filter Chart

  1. #21
    Moderator Octarine's Avatar
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    Default Re: ND filter Chart

    Quote Originally Posted by catchlights View Post
    Please remove the link in your signature.
    If you want to keep the link, than please sign up as advertiser.
    Didn't notice this .. best you delete all last postings.. it's likely a spammer anyway...
    EOS

  2. #22
    Deregistered allenleonhart's Avatar
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    Default Re: ND filter Chart

    Quote Originally Posted by edutilos- View Post
    You have a camera?

    Put it to manual mode and you can spin the dial to find out how many stops it adds.

    Btw, 1 stop = double timing, i.e. 1 stop ND filter on a 1/250 second exposure will give 1/125 seconds..

    2 stops = 2^2 = 4 times as long
    3 stops = 2^3 = 3 times as long

    So on so forth. Surely you can do the maths... X-stop ND filter extends exposure timing of Y seconds to be Y*2^X...
    wk, minor typo ar? 2 to power of 3 is 8 times haha...

  3. #23
    Senior Member edutilos-'s Avatar
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    Default Re: ND filter Chart

    Quote Originally Posted by allenleonhart View Post
    wk, minor typo ar? 2 to power of 3 is 8 times haha...
    Yes typo..

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