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CPL Filter which way is Right Way Up?
1047 6 2018-3-30
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Skymax.
lvl.4
Australia
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So I know they only work when properly oriented but my CPL Filter has no indicating marks on how to place it on the lens for it to work as designed?

A lot of water around here so it would be handy to know.
2018-3-30
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msinger
Captain
Flight distance : 183694 ft
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United States
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2018-3-30
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Skymax.
lvl.4
Australia
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Thanks I just watched this video and although he explains what it does and how necessary it is to have correct orientation he doesn't say how to do this?

BTW I have a Mavic pro and my filters are not screw-on and do not have a second free-turning element.

He is boosting Freewell filters so no other filters are discussed.
2018-3-30
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Montfrooij
Captain
Flight distance : 2164990 ft
Netherlands
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Skymax. Posted at 2018-3-30 12:56
Thanks I just watched this video and although he explains what it does and how necessary it is to have correct orientation he doesn't say how to do this?

BTW I have a Mavic pro and my filters are not screw-on and do not have a second free-turning element.

Best is to put it on and use the preview on your mobile while still on the ground to align the Polarizer filter and see what orientation gives the best effect.
2018-3-30
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Silvex
lvl.4

United States
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There is no "correct" orientation for a CPL. It all depends on the plane of the reflected light. The only practical way to know that is to turn the filter and watch the visible change in the image. This is easy on a DSLR, but on a drone it's a pain the the hind quarters!
2018-3-30
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Jyunte
First Officer
Flight distance : 2103150 ft
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There are two surfaces on any CP filter... The front, which faces the way the camera is pointing, and the back, which faces the rear of the aircraft.

Turn the CP filter so that the back is touching the lens (as if trying to put it on backwards), and while looking at the video on you phone/tablet, rotate the filter until it gets the effect you find most pleasing. Then, keeping your fingers at the top and bottom of the filter, simply flip the filter around and push it onto the camera.
2018-3-30
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Skymax.
lvl.4
Australia
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Jyunte Posted at 2018-3-30 17:07
There are two surfaces on any CP filter... The front, which faces the way the camera is pointing, and the back, which faces the rear of the aircraft.

Turn the CP filter so that the back is touching the lens (as if trying to put it on backwards), and while looking at the video on you phone/tablet, rotate the filter until it gets the effect you find most pleasing. Then, keeping your fingers at the top and bottom of the filter, simply flip the filter around and push it onto the camera.

Good info thanks.
2018-3-31
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