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Thread: full time on CPL

  1. #1

    Default full time on CPL

    what is the implication of having a CPL filter on full time? i like it when blocking off reflections. any other times i find no difference other than adding 1 or 2 stops.
    [Canon EOS 5D II + 40D | EF 16-35mm f/2.8L II + 70-200mm f/2.8L IS II] [Fuji X-Pro1 + XF35mm f/1.4]

  2. #2
    Moderator catchlights's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by zzyzx View Post
    what is the implication of having a CPL filter on full time? i like it when blocking off reflections. any other times i find no difference other than adding 1 or 2 stops.
    you don't need polarizer filter on at all time, it only needed at some situations.
    it cut down 2 to 2 third stops, make you using bigger aperture, slower shutter or higher ISO bcos losing some lights, may have difficulty in focusing as well.
    Shoot to Live, Live to Shoot
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  3. #3

    Default Re: full time on CPL

    having extra glass will always affect image quality, the only truely non-interfering medium is empty space. 2ndly, 1 or 2 stop could make a difference if you are trying to capture a moving subject or for night shoots.

  4. #4

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    I agree on moving object but night shoot for landscape or stationary will not have much effect as u will b using tripod anyway. With better high iso performance, losing 2 to 3 stops may not b a issue anymore.

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    Moderator daredevil123's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by zzyzx View Post
    what is the implication of having a CPL filter on full time? i like it when blocking off reflections. any other times i find no difference other than adding 1 or 2 stops.
    Do you put suntan lotion on your whole body 24 hours a day 7 days a week all the time?


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    Moderator daredevil123's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by crabball View Post
    I agree on moving object but night shoot for landscape or stationary will not have much effect as u will b using tripod anyway. With better high iso performance, losing 2 to 3 stops may not b a issue anymore.
    So pay a lot more money just to buy camera with better ISO performance, only to dumb it back down with a filter.

    Very wise thing to do.

  7. #7
    Senior Member Diavonex's Avatar
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    Default Re: full time on CPL

    If you want to put on your dark glasses all the time, make sure you don't trip and fall.

    It's difficult to focus with the CPL especially at night.

    I only wear dark glasses when necessary.

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    Default Re: full time on CPL

    two stops is a significant amount of light.

  9. #9

    Default Re: full time on CPL

    In addition to all the reasons already mentioned, you sure you want to use a dim viewfinder? Esp for night shots? Good way to miss something in your frame and an aid to bad composition.

  10. #10

    Default Re: full time on CPL

    Quote Originally Posted by zzyzx View Post
    what is the implication of having a CPL filter on full time? i like it when blocking off reflections. any other times i find no difference other than adding 1 or 2 stops.
    I will be the devils advocate here and ask you to try it out for sometime yourself. You do get some benefits from reduced reflections for some surfaces, better contrast and colors, reduced hazing and of course bluer skies (In The Right Situations ).

    Of course you'd loose a stop or two and it does not work all the time (wrong angle; night time; no blue in the sky at all; etc);
    No harm to experiment...

  11. #11

    Default Re: full time on CPL

    i leave it on because i'm too lazy to change it every now and then. Unless i have problems focusing, if not i will just leave it attached.
    5D Mark II| 7D| EF50f1.4 | EF85f1.8| 16-35L| 24-70L | 70-200 II L | 150 f2.8 Macro

  12. #12
    Senior Member Diavonex's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by jimmygoo View Post
    i leave it on because i'm too lazy to change it every now and then. Unless i have problems focusing, if not i will just leave it attached.
    When the CPL is on:

    1. Less light reach the sensor

    2. You compensate by using wider Aperture, slower Shutter Speed or higher ISO

    3. This will result in thin DOF, camera shake or grainy pictures

    If you are lazy to remove filter, you're better off with a PNS camera.

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    Moderator daredevil123's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by jimmygoo View Post
    i leave it on because i'm too lazy to change it every now and then. Unless i have problems focusing, if not i will just leave it attached.
    What a waste of a nice FF camera...

  14. #14
    Senior Member giantcanopy's Avatar
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    Default Re: full time on CPL

    When i first started shooting some yrs back, i also hooked my Nikon slim CPL on my D80. Happy snapping away in Budapest for a day, and the idea of loss in light dawned as the sun starts to set. The CPl became a PRN usage from Day 2.

    Sometimes u have to try to learn. I did not have the hindsight to post the query, but there is definitely some take home message from the contributions of the forumers.

    Ryan

  15. #15
    Moderator catchlights's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by jimmygoo View Post
    i leave it on because i'm too lazy to change it every now and then. Unless i have problems focusing, if not i will just leave it attached.
    I suggest you visit this thread again one year later, to review this statement of yours.
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  16. #16
    Deregistered allenleonhart's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by catchlights View Post
    I suggest you visit this thread again one year later, to review this statement of yours.

  17. #17

    Default Re: full time on CPL

    Other than for better saturation (bluer sky) and cutting out reflections, the only other time I use a CPL is to decrease the shutter speed like when taking pictures of a waterfall in bright daylight.

  18. #18

    Default Re: full time on CPL

    Quote Originally Posted by Diavonex View Post
    When the CPL is on:

    1. Less light reach the sensor

    2. You compensate by using wider Aperture, slower Shutter Speed or higher ISO

    3. This will result in thin DOF, camera shake or grainy pictures

    If you are lazy to remove filter, you're better off with a PNS camera.
    true, but since i use that only on my wide angle lens which i use almost exclusively for landscape, then it's ok. i'll be using a tripod and small aperture also.

    Quote Originally Posted by daredevil123 View Post
    What a waste of a nice FF camera...
    maybe, but i don't use it for other lens, except the 16-35.

    Quote Originally Posted by catchlights View Post
    I suggest you visit this thread again one year later, to review this statement of yours.
    i certainly will.
    5D Mark II| 7D| EF50f1.4 | EF85f1.8| 16-35L| 24-70L | 70-200 II L | 150 f2.8 Macro

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    Default Re: full time on CPL

    Quote Originally Posted by jimmygoo View Post
    true, but since i use that only on my wide angle lens which i use almost exclusively for landscape, then it's ok. i'll be using a tripod and small aperture also.
    Wide angle + CPL may actually work against you, since you can get uneven darkening of the sky. Sometimes it's ok, but other times can look odd. Just have to keep in mind if you have the CPL on a WA lens all the time.
    My photos - see just some or all of it =)

  20. #20
    Moderator daredevil123's Avatar
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    Default Re: full time on CPL

    Quote Originally Posted by jimmygoo View Post
    true, but since i use that only on my wide angle lens which i use almost exclusively for landscape, then it's ok. i'll be using a tripod and small aperture also. maybe, but i don't use it for other lens, except the 16-35.
    CPL on UWA is not the best idea.

    http://www.earthboundlight.com/phototips/wide-angle-uneven-polarization.html

    and examples of uneven polarization:
    http://www.google.com.sg/images?q=uneven+polarization&hl=en&prmd=ivnsfd&um= 1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1728&bih=930

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