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FORUMS Canon Cameras, Lenses & Accessories Canon Accessories
Thread started 10 Feb 2018 (Saturday) 17:21
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ND filter exposure & color balance off???

 
n1as
Goldmember
2,326 posts
Joined Oct 2007
Salem, OR
Post has been edited 7 days ago by n1as.
Feb 10, 2018 17:21 |  #1

I just bought a brand new B&W 6 stop ND filter. Took pics with it. The images end up being under exposed by 2/3 to 1 stop and I have to dial in about 1200 deg C more color temp to restore white balance (the filter is cool).

Oh, and the corners show more light fall-off with the filter than without. This is with UWA lenses. I haven't tried with normal or tele focal lengths.

Is all of this normal???


- Keith
http://darwinphoto.zen​folio.com (external link)

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DesolateMirror
Senior Member
DesolateMirror's Avatar
Joined Oct 2015
Feb 10, 2018 18:34 |  #2

Yeah, they are common problems that you have to work around for the most part. When you see 9/10 stop long exposures people will often opt to make them black and white due to the colour issues. The cheaper filters tend to suffer more from colour cast, vignetting and unevenness.

Someone who has tested a lot of ND filters might be able to give advice on which ones work well.




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Nogo
I could have been worse....
Joined Dec 2013
All Along the Natchez Trace (Clinton, MS)
Post has been edited 7 days ago by Nogo.
Feb 10, 2018 19:24 |  #3

Even the best are not neutral. No matter what ND you use you will need to adjust the color in post some. The better ones just require less adjustment than the good ones do.

Learn to work with what you have. If you try to find perfect filters especially with ultra wide lenses you will go broke.


Philip
Does the TF actually know about the soda cans and PVC pipe from 30 years ago?

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Peripatetic
Hatchling
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Joined Dec 2016
Feb 14, 2018 01:11 |  #4

I have tried a lot of filters and B&W were my favorite until I came across breakthrough photography. Poke around the web and check out reviews. I highly recommend them.




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ND filter exposure & color balance off???
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