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Old Sep 26, 2013, 7:30 PM   #11
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I've heard of instances when Linear Polarizing filters are mislabeled as Circular Polarizing filters.
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Old Sep 27, 2013, 12:45 AM   #12
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Is there a better option than a CPL on a bright sunshiny day to reduce glare?

Thanks Ozzie!
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Old Sep 27, 2013, 3:21 AM   #13
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is the cpl the only filter on the the lens
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Old Sep 27, 2013, 7:38 PM   #14
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Just for fun, you might try turning it around and shooting through it backwards. The appearance of the shots you posted make me wonder if the filter was assembled incorrectly.

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Old Sep 28, 2013, 7:37 AM   #15
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I think what you've got isn't a CPL, despite what's engraved on it.
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Linear polarizing filters can be easily distinguished from circular polarizers. In linear polarizing filters, the polarizing effect works (rotate to see differences) regardless of which side of the filter the scene is viewed from. In "circular" polarizing filters, the polarizing effect works when the scene is viewed from the male threaded (back) side of the filter, but does not work when looking through it backwards.
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Old Oct 7, 2013, 1:52 PM   #16
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I very much doubt it's the filter as I use polarizers all the time... Even with my variable ND's which are polarizers too on a much longer shutter speed!

May be it's a bad tripod (especially look at the 1st image posted) The horizontal axis is OK on the mailbox because the vertical lines on the post (and letter/numberings) are sharp!
-> It looks like the camera moved (or drop) on the vertical axis, blurring the post/numberings up/down, but not sideway

Also it seems like the final clear image is sharpened in PS unlike the 1st two... BTW the depht of field is also not right as the 1st image with f/6.4 has less DOF than the final image at f/5.6. It could be the IS interfering with the tripod too as they need to be shut-off in this case.
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Old Apr 4, 2014, 5:54 PM   #17
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actually, it looks like the filter to me. the shot with no filter/no extender looks sharp. the one with the filter looks blurry, and of course, the 2x converter will only magnify the problem. try a different CPL and see if that cures the problem.
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Old Apr 4, 2014, 5:57 PM   #18
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Quote:
Originally Posted by NHL View Post
Even with my variable ND's which are polarizers too on a much longer shutter speed!
you sure about that? ND filters aren't polarized at all... they're just neutral gray...

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Old Apr 4, 2014, 6:02 PM   #19
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Quote:
Originally Posted by squirl033 View Post
you sure about that? ND filters aren't polarized at all... they're just neutral gray...
ND filters aren't polarized.

Variable ND filters are polarized.
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