Results 1 to 18 of 18

Thread: CPL & Catchlights

  1. #1

    Default CPL & Catchlights

    I haven't really got a chance to get my hands on a cpl filter yet.
    However, I am wondering, when shooting outdoor portraits with a cpl filter and flash, will the catchlights on my subject's eyes be eliminated or simply reduced?

    Thanks in advance for the inputs!
    Canon 5DMKII, 50mm F1.2L, 24-70mm F2.8L, 70-200mm F2.8L IS MKII

  2. #2
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,901

    Default Re: CPL & Catchlights

    the catchlights is reflection of the flash, is a hotspot, CPL filter won't be able to remove it.



    .
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  3. #3

    Default Re: CPL & Catchlights

    Quote Originally Posted by catchlights View Post
    the catchlights is reflection of the flash, is a hotspot, CPL filter won't be able to remove it.
    .
    He was trying to eliminate you, bro! Glad you survived.


    Alpha

  4. #4
    Deregistered allenleonhart's Avatar
    Join Date
    Sep 2008
    Posts
    3,656
    Blog Entries
    1

    Default Re: CPL & Catchlights

    i thought ppl like catchlights?

  5. #5
    Senior Member
    Join Date
    Dec 2007
    Location
    Punggol
    Posts
    5,812

    Default Re: CPL & Catchlights

    Quote Originally Posted by Rashkae View Post
    He was trying to eliminate you, bro! Glad you survived.


    Was thinking the same thing haha.

    He's just asking whether it will be removed la, not whether he likes it. And it won't. In that sense you can use it as a less powerful ND filter as well.
    Our pictures are our footprints. Itís the best way to tell people we were here - JoeMcnally | Flickr

  6. #6
    Moderator catchlights's Avatar
    Join Date
    Sep 2004
    Location
    Punggol, Singapore
    Posts
    21,901

    Default Re: CPL & Catchlights

    Quote Originally Posted by Rashkae View Post
    He was trying to eliminate you, bro! Glad you survived.


    it's sound more like a magic show, hand turning the CPL filter,
    "now you see me....... now you don't........."
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  7. #7

    Default Re: CPL & Catchlights

    isnt it better to have catch lights in the eye?

  8. #8
    Member
    Join Date
    Mar 2010
    Location
    Clementi
    Posts
    351

    Default Re: CPL & Catchlights

    my guess is that it wont completely remove it but it can possibly reduce some of the light reflected from the subject's eyes. since CPLs can remove some reflection from subjects who are wearing glasses, very possible that catchlights can too.

    but if, im not sure of the possibility here, the light reflected from the subject's eyes is polarised in the same plane, then the catchlight can be eliminated completely.
    physics tells us that an unpolarized beam of light, vibrating in all directions perpendicular to its path strikes such a surface and is reflected. The reflected beam will be polarized with vibration directions parallel to the reflecting surface. but the eye isnt completely flat. so i am not sure. one thing for sure however, if you rotate the polariser in other angles it will not definitely remove the catchlights.

  9. #9
    Member vngks's Avatar
    Join Date
    Jun 2009
    Location
    Fourth moon of Yavin
    Posts
    337

    Default Re: CPL & Catchlights

    I think TS meant red-eye instead of catchlight.

  10. #10
    Member
    Join Date
    Mar 2010
    Location
    Clementi
    Posts
    351

    Default Re: CPL & Catchlights

    Quote Originally Posted by vngks View Post
    I think TS meant red-eye instead of catchlight.
    why would you think that? sometimes we wouldnt want too much catchlights in the subject's eyes, it might make the eye become overexposed. thats why people actually use CPLs in portrait shooting, on top of the enhancing colours and contrasts in the photo.

    maybe TS can clarify?

  11. #11
    Deregistered allenleonhart's Avatar
    Join Date
    Sep 2008
    Posts
    3,656
    Blog Entries
    1

    Default Re: CPL & Catchlights

    Quote Originally Posted by alphabeta93 View Post
    why would you think that? sometimes we wouldnt want too much catchlights in the subject's eyes, it might make the eye become overexposed. thats why people actually use CPLs in portrait shooting, on top of the enhancing colours and contrasts in the photo.

    maybe TS can clarify?
    but cpl dun remove catchlights wad.... cpl is a polariser leh. it blocks off certain vibrations and lets some through.

  12. #12
    Senior Member sinned79's Avatar
    Join Date
    Jun 2009
    Location
    Singapore
    Posts
    10,859

    Default Re: CPL & Catchlights

    hmm i so far never heard of ppl using cpl on lens to shoot protraits, this is new to me...

  13. #13

    Default Re: CPL & Catchlights

    Actually, my question was really simple.
    I merely wanted to know if i could potentially lose the catchlights if I used a cpl.
    Of which, bro Catchlights (no pun intended) has helped to clarified.

    Thanks all for the inputs!
    Canon 5DMKII, 50mm F1.2L, 24-70mm F2.8L, 70-200mm F2.8L IS MKII

  14. #14

    Default Re: CPL & Catchlights

    Hi, would like to know when is the best time to use CPL? When a strong light source is above my head? Perpendicular to the camera? Beside cancelling out reflection, any other use?

    Thanks

  15. #15

    Default Re: CPL & Catchlights

    Quote Originally Posted by kinky1971 View Post
    Hi, would like to know when is the best time to use CPL? When a strong light source is above my head? Perpendicular to the camera? Beside cancelling out reflection, any other use?

    Thanks
    Click here:

    http://************/2a6xstf
    Alpha

  16. #16

    Default Re: CPL & Catchlights

    Quote Originally Posted by sinned79 View Post
    hmm i so far never heard of ppl using cpl on lens to shoot protraits, this is new to me...
    hmmm? tot this is quite common?

  17. #17

    Default Re: CPL & Catchlights

    Quote Originally Posted by WhiteFields View Post
    hmmm? tot this is quite common?
    Nope. Not at all. Most people will use CPL when shooting scenery, architecture and landscapes, but definitely not common for portraiture.
    Alpha

  18. #18
    Senior Member sinned79's Avatar
    Join Date
    Jun 2009
    Location
    Singapore
    Posts
    10,859

    Default Re: CPL & Catchlights

    Quote Originally Posted by WhiteFields View Post
    hmmm? tot this is quite common?
    Quote Originally Posted by Rashkae View Post
    Nope. Not at all. Most people will use CPL when shooting scenery, architecture and landscapes, but definitely not common for portraiture.
    yeah usually those like landscapes will have a CPL filter with them but not protrait shooters...

    a potential problem is that when you twist and turn to get the colors (usually ppl want deep blue skies), can the model/subject wait? And also the colors might be thrown off on the model/subject especially the skin tones.

    but one thing that struck me was to cut off the reflection on the glass (minus eye catchlights cos eye catchlights is good for protraits), this seems to be a good idea but thinking of the problem above... i think it is still unwise to use CPL for protraits.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •