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Thread: how to use CPL

  1. #21
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    Default Re: how to use CPL

    Quote Originally Posted by zzyzx View Post
    you can stack both the filters but you'll get internal flare, and degrading of IQ. if you really die die must do it, then cpl should be the outer most filter.
    Can you show me an example of IQ being degraded by the filters? Or are you assuming that there should logically be some IQ drop?

  2. #22
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    Default Re: how to use CPL

    Quote Originally Posted by iam537 View Post
    Another newbie question... My Hoya CPL can be rotated and there is a white marking on it, so where do I rotate the marking to?? My guess is top. Advise pse. Thanks
    Let me try provide a better answer.

    The max effect of a CPL is obtained when the lens it's used on is perpendicular to the light source
    if you're shooting into light, your PL is useless.

    example:
    Light sourse
    |
    |
    |
    guy. camera -------- subject

    like in the picture, if the subject is directly in front of you, and the sun (light source) is overhead, then turn the white marking to the top for max effect.

    if the light source is from the left, just turn the white marking to the main light source you want to polarise.

    can understand?

  3. #23

    Default Re: how to use CPL

    Crystal clear... Thanks

  4. #24

    Default Re: how to use CPL

    Quote Originally Posted by unseen View Post
    Let me try provide a better answer.

    The max effect of a CPL is obtained when the lens it's used on is perpendicular to the light source
    if you're shooting into light, your PL is useless.

    example:
    Light sourse
    |
    |
    |
    guy. camera -------- subject

    like in the picture, if the subject is directly in front of you, and the sun (light source) is overhead, then turn the white marking to the top for max effect.

    if the light source is from the left, just turn the white marking to the main light source you want to polarise.

    can understand?
    How about B+W CPL filters? Any guide like the white marking for Hoya CPL?

  5. #25
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    Default Re: how to use CPL

    yes. they all have a marking on the rotating portion.

  6. #26
    Senior Member wranger's Avatar
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    Default Re: how to use CPL

    Quote Originally Posted by Yatlapball View Post
    Yup. It's quality is decent. Mine was from Yodobashi in Osaka
    Bought mine same place
    UK HMS Photojournalist

  7. #27

    Default Re: how to use CPL

    Quote Originally Posted by Yatlapball View Post
    yes. they all have a marking on the rotating portion.
    Hmm, i'm looking at a B+W CPL and I see 3 markings namely the words "B+W", "MADE IN GERMANY" and "F-PRO". I don't see any distinctive marking like the Hoya CPL. I don't think the word "MADE IN GERMANY" serves that purpose. So which markings can I use as a guide like the Hoya CPL?

  8. #28
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    Default Re: how to use CPL

    Dun have? Hmmm. Then just observe through the VF as you turn the ring around.

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