A&P Circular polarizer's -EV effect

Discussion in 'Lifestyle' started by GlobeGuy, Jul 12, 2008.

  1. GlobeGuy

    GlobeGuy New Member

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    Approximate how much brightness do you lose with CP, in terms of EV?
     
  2. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    1/2 - 1 stop depending on the CPL from what I've seen.
     
  3. themolsen

    themolsen New Member

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    my CPL puts me down 1 1/4 stop. others i've used are only 1/2 stop.
     
  4. mojito

    mojito New Member

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    each is different and theres easy ways to find it. the packaging may even include the filter factor. Mine were 1-2 stops.
     
  5. QWIKSNK

    QWIKSNK New Member

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    which filters only result in -1/2 stop? and how expensive are they??
     
  6. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    The only one I've had that was 1/2 stop was a complete POS Tiffen that flared like a mofo. Not recommended at all.

    My Hoya Pro 1 is 2/3 stop (iirc. it's been a while since I used it) and my Heliopan is 1 stop.
     
  7. QWIKSNK

    QWIKSNK New Member

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    whats the -EV of B+W?
     
  8. mojito

    mojito New Member

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  9. Jonny Chimpo

    Jonny Chimpo OT Supporter

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    I don't own one, so I couldn't tell you. :dunno:
     

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