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Wordpress
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Joined: Sun Sep 09, 2018 6:07 pm

Polarizing Filter?

Fri Oct 05, 2018 3:42 pm

Hello there.

So I've recently started aviation photography. I've bought the Sigma 150-600mm lens and my father is helping me out. He hasn't done aviation photography but he has done armature photography in the past. He insists on using a polarizing filter, but I'm wondering if that's causing more problems then solutions here. My shutter speed doesn't seem so high when comparing my exif data to others'. When I shoot at f/7.1 and an ISO of 200 on a sunny day, I still get 1/300-1/500 of a second, and I'd like to have more margin so I don't get blur. Is the polarizing filter the culprit or are these limitations to my lens?

Thanks again,
Jacob Singer.
 
ThePointblank
Posts: 3055
Joined: Sat Jan 17, 2009 11:39 pm

Re: Polarizing Filter?

Sat Oct 06, 2018 8:39 am

Polarizers are meant to cut glare, manage reflections and darken skies to a more deep blue.

They also cut the amount of light getting to your sensor by about 1-2 stops. That can be both a positive and a negative.

I would pay attention to which direction you are shooting into; if you are shooting towards the sun, a polarizer might be more appropriate. Otherwise, you can drop the polarizer.

The other way to compensate is to increase ISO and lower the f/stop.
 
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airkas1
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Re: Polarizing Filter?

Sat Oct 06, 2018 10:28 am

According to a tutorial I watched recently, a polarizer works best when shooting at a 90 degree angle regarding the sun's position(?). For dynamic subjects, I wouldn't use a polarizer. For static subject, it could make for a different type of photo, but I haven't tried that myself.

But if anything, try a few photos with and a few without and compare the results.
 
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yerbol
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Re: Polarizing Filter?

Sun Oct 07, 2018 12:33 pm

For the Sigma with this kind of focal length you have to have a very fast shutter speed but polarizing filter cuts the light and shutter speed comes 1/300 - 1/500.
I personally do not use polarizing filters for aviation photography.
With best regards from Almaty
 
vikkyvik
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Joined: Thu Jul 31, 2003 1:58 pm

Re: Polarizing Filter?

Mon Oct 08, 2018 3:31 pm

airkas1 wrote:
For static subject, it could make for a different type of photo, but I haven't tried that myself.


It can work great for landscape and water shots (although, to be fair, I haven't used mine in years).

But for dynamic aviation shots, as previously noted, you'd have to keep adjusting the polarizer as you move/rotate and the angle of light changes. Plus you lose some incident light.

Overall, not really worth it for dynamic photography.
I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 
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Wordpress
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Joined: Sun Sep 09, 2018 6:07 pm

Re: Polarizing Filter?

Tue Oct 09, 2018 5:19 pm

Okay, thank you! Thanks to my father he cross threaded it so we'll have to find a way to remove it. But that's something I can do. Thanks for the opinion guys, maybe my photos will start seeing improvement.

A moderator can close the thread now.
 
ThePointblank
Posts: 3055
Joined: Sat Jan 17, 2009 11:39 pm

Re: Polarizing Filter?

Sun Oct 14, 2018 11:02 am

Wordpress wrote:
Okay, thank you! Thanks to my father he cross threaded it so we'll have to find a way to remove it. But that's something I can do. Thanks for the opinion guys, maybe my photos will start seeing improvement.

A moderator can close the thread now.

Get a lens filter wrench; they are pretty cheap, and makes life easier for removing lens filters, including ones that are stuck.
 
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Wordpress
Topic Author
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Joined: Sun Sep 09, 2018 6:07 pm

Re: Polarizing Filter?

Mon Oct 15, 2018 3:21 pm

ThePointblank wrote:
Wordpress wrote:
Okay, thank you! Thanks to my father he cross threaded it so we'll have to find a way to remove it. But that's something I can do. Thanks for the opinion guys, maybe my photos will start seeing improvement.

A moderator can close the thread now.

Get a lens filter wrench; they are pretty cheap, and makes life easier for removing lens filters, including ones that are stuck.


Hehe, I sent away for the right wrench two weeks ago. It's shipping all the way from Shenzen though, but it's in the USA now, shouldn't be too long. Thanks though. :)
 
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bombayduck
Posts: 202
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Re: Polarizing Filter?

Wed Oct 17, 2018 7:31 pm

You could also try using shutter priority, where you can set the shutter speed to say 1/800 of a second. Then the camera will set the f-stop. I tend to use shutter priority on a sunny day with iso at either 100 or 200. As to filters either a sky light or a ultra violet will do to help protect the lens glass, it is much easier and cheaper to replace the filter than to replace the lens.

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