Quick Circular Polarizing Filter Question

Discussion in 'Digital Cameras & Equipment' started by jbwolffiv, Mar 31, 2012.

  1. jbwolffiv

    jbwolffiv Member

    I want to get a circular polarizing filter. ; My question is this: ; Can I get a 77mm one, then just use the step down/up rings like I do with my ND filter? ; Or should I plan to buy for each lens? ; Thanks so much!
     
  2. gary

    gary Member

    yes, get it in 77mm, and use the step rings
     
  3. jbwolffiv

    jbwolffiv Member

    Thanks Gary, saves some money!!
     
  4. haunteddoc

    haunteddoc Member

    I ; have been using a stepup ring for awhile now and no problems. ; Much cheaper than buying filters for each size end
     
  5. Tim

    Tim Administrator Staff Member

    Jim, what about vignetting?
     
  6. haunteddoc

    haunteddoc Member

    Haven't really noticed a problem since your going from smaller to larger. ;
     
  7. Tim

    Tim Administrator Staff Member

    Oh yeah... ; didn't think of that. ; Haven't had coffee yet and PolyMedic had me out late last night.
     
  8. jbwolffiv

    jbwolffiv Member

    Another stupid question from John, I have heard of vignetting, I know it has something to do with the edges of images, but that's it. ; Anyone care to explain for me?


    Sent from my iPhone using Tapatalk
     
  9. Tim

    Tim Administrator Staff Member

    Vignetting is the darkening of the frame of an image due to poor lens design, incompatibility, too many filters, etc. ; For example, when I used someone's 8-16 Sigma at Pixelmania, that lens was designed for a 1.6x crop. ; My 1d4 is 1.3x crop so from 8-10.5mm, I could see the lens hood at the edge of my pics, which resulted in a dark circle in the captured image.

    When done artistically, it can be a great creative effect but it should generally be avoided.
     
  10. jbwolffiv

    jbwolffiv Member

    Thanks for that Tim!


    Sent from my iPhone using Tapatalk
     

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