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Thread: Using CPL

  1. #1

    Default Using CPL

    May i know how to use CPL correctly? Do i need to turn n adjust every shot? But no matter how i turn, it still looks e same to me..

  2. #2
    Senior Member sinned79's Avatar
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    Default Re: Using CPL

    Quote Originally Posted by badtzdiana View Post
    May i know how to use CPL correctly? Do i need to turn n adjust every shot? But no matter how i turn, it still looks e same to me..
    if u look at the filter under the sun light... there is actually different tones. so u will twist and adjust the filter to your preference.

  3. #3

    Default Re: Using CPL

    Quote Originally Posted by sinned79 View Post
    if u look at the filter under the sun light... there is actually different tones. so u will twist and adjust the filter to your preference.
    U mean some parts r lighter n some r darker? So usually e darker part turn to sky??

  4. #4

    Default Re: Using CPL

    I got it figured out liao.. Now i saw markings THKS!!

  5. #5

    Default Re: Using CPL

    Hi, there are a few things to note when using CPL, the shooting angle play an important role in getting the maximum CPL effect.

    refer to the following link for more details, u can try to search in google to find more info.

    http://digital-photography-school.co...rizing-filters
    http://dpfwiw.com/polarizer.htm
    Last edited by miaoteh; 29th July 2009 at 03:31 PM.

  6. #6

    Default Re: Using CPL

    When using indoor or in shades, use tables, glass, signboard, leave surface shine, cloth shine; anything that can give you some reflection or shine. Turn it till it is least visible, that is the max.

    Quote Originally Posted by badtzdiana View Post
    U mean some parts r lighter n some r darker? So usually e darker part turn to sky??

  7. #7

    Default Re: Using CPL

    does it matter different brands of CPL differs in performance?
    cos i've got a Vitacon CPL from MS Colour and I really can't see much difference despite turning & in fact, I got dark vignetting at the corners...got the lomo effects on a dslr

  8. #8
    Moderator Octarine's Avatar
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    Default Re: Using CPL

    Not to forget: turn off any AWB - otherwise the darker blue sky by CPL could be balanced off.

  9. #9
    Moderator Octarine's Avatar
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    Default Re: Using CPL

    Quote Originally Posted by chameleon20 View Post
    does it matter different brands of CPL differs in performance?
    cos i've got a Vitacon CPL from MS Colour and I really can't see much difference despite turning & in fact, I got dark vignetting at the corners...got the lomo effects on a dslr
    First thing: if there is nothing to filter then the effect turns out quite .. limited. Vignetting can occur on UWA lenses, there are slim filters for such cases (but costs a bit more).
    Vitacon ... no comments but I haven't seen these pieces in any decent filter review or test. Get a Hoya at least.

  10. #10

    Default Re: Using CPL

    Quote Originally Posted by Octarine View Post
    Not to forget: turn off any AWB - otherwise the darker blue sky by CPL could be balanced off.
    Ah ... this could be the reason ...
    Nikon.D90 | Canon.S90 | Project 365

  11. #11

    Default Re: Using CPL

    Quote Originally Posted by Octarine View Post
    Not to forget: turn off any AWB - otherwise the darker blue sky by CPL could be balanced off.
    No wonder i always couldnt get the effect i want...
    may i know what WB should i set to? daylight?
    and any other tips?

    Thanks for sharing!

  12. #12

    Default Re: Using CPL

    Quote Originally Posted by chameleon20 View Post
    does it matter different brands of CPL differs in performance?
    cos i've got a Vitacon CPL from MS Colour and I really can't see much difference despite turning & in fact, I got dark vignetting at the corners...got the lomo effects on a dslr
    may i know wat lens u use with e CPL? I like vignettes, wanna try to get it..

  13. #13

    Default Re: Using CPL

    Quote Originally Posted by Octarine View Post
    Not to forget: turn off any AWB - otherwise the darker blue sky by CPL could be balanced off.
    so which white balance mode should i set?

  14. #14
    Moderator Octarine's Avatar
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    Default Re: Using CPL

    Quote Originally Posted by badtzdiana View Post
    so which white balance mode should i set?
    How about "Daylight"? Go and try different modes and see how it works. But it's a good idea to read about While Balance before. There is no 'magic setting'; use the settings according the situation and your intended outcome.

  15. #15
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    Default Re: Using CPL

    To see maximum effects of the CPL filter, we need to know the followings CPL functions :

    1) Darken the sky.
    To see the maximum effect, point your shoulder at the sun, then the sky that you are facing (front and back) will have the maximum effect by adjusting the CPL, but be careful not to over doing it.
    2) Improve the color saturation. It helps to remove glare to make the color more visible and saturated. Especially after raining day.
    3) Reduce or remove the reflection.
    You can reduce reflection from water surface, reflection from window etc, however, CPL filter will have no effect on the bare metallic surface as the reflected light from the metallic surface is non-polarized. To reduce the reflection from the window, the maximum effect is not standing right in front of the glass window, in fact, the maximum effect can be achieved at 35 to the window with proper adjustment of the CPL filter.
    4) Use your CPL as Neutral density filter since it absorbs 1 to 2 stops of light. Longer shutter time is required to blur the flowing water.

    To solve Vignetting problems :

    1) use larger size filter together with a step up ring for short focal length lenes. This makes the edge of the filter further away from the edge of lens. The angle of view of the lens is less likely to see the filter ring eliminating vignetting problems.
    2) Use thinner filter as what was suggested on wide-angled lens but cost more money. especially the B+W filter.
    3) use software to crop the image.
    4) Use software to correct the vignetting problem (s/w like photoshop, capture nx has this function)
    5) avoid using the short focal length on 18-200 mm lens (i.e at 18mm) or wide angle len (12-24mm, ie at 12mm focal length). If you use UV filter together with the CPL filter, the results will be more worsen.
    Last edited by kutten; 17th August 2009 at 11:16 AM.

  16. #16

    Default Re: Using CPL

    wow, you guys are conditioning spoonfeeding behaviour.. tsk tsk tsk!!

  17. #17
    Senior Member Lomographer's Avatar
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    Default Re: Using CPL

    Quote Originally Posted by night86mare View Post
    wow, you guys are conditioning spoonfeeding behaviour.. tsk tsk tsk!!
    can't be helped

    and for the record, there is a search button in this forum
    Pentax K-x

  18. #18

    Default Re: Using CPL

    Well in my experience, vignetting can be cause by the fact that a CPL is screw into the thread of a UV which will cause it. Maybe u can try removing ur UV b4 mounting the CPL

  19. #19
    Moderator catchlights's Avatar
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    Default Re: Using CPL

    night86mare why don't you write a thread about CPL filter, then let mod make it sticky, so next time we can just ask people to read your CPL thread.



    btw, I have a spoon feeding photo, anyone keen to spoon feeding others can add this photo in your post freely. don't worry, permission for using this photo for spoonfeeding posting is granted.
    Shoot to Live, Live to Shoot
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  20. #20

    Default Re: Using CPL

    Quote Originally Posted by catchlights View Post
    night86mare why don't you write a thread about CPL filter, then let mod make it sticky, so next time we can just ask people to read your CPL thread.
    it can be done, but i am slowly starting to questioning the wisdom of that.

    i think sooner or later, i will just stop bothering to reply altogether. write stickies, people will still ask, then it becomes spoonfeeding with stickies. just varying degrees of the same thing.

    the saddest part is that all this information is available easily, 2 seconds away with google. i usually only write stickies on subjects that aren't that easily available, i.e. how to post flickr images on clubsnap, prosumer versus dslr. doesn't make sense to bother to write something (or repeat) that can be found in 80,000 different forms on the world wide web.

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