DIY Vari ND fail
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Old 04-14-2014   #1
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Default DIY Vari ND fail

I took a $9 ebay CPL filter, flipped the plastic filter, combined it with my good B+W CPL to make a variable ND filter.

On my DX bodies I hadn't noticed any problems. Strong blue color cast when I get close to max setting (8 stops).

Yesterday I tried it on the FX body ... the blue corners are from the filter. Maybe it's not so hot.

I will need to play around to see if I can orient the blue by rotating the B&W filter to a specific orientation. - maybe if the blue were top and bottom the impact might be greatly reduced.

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Old 04-14-2014   #2
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Default Re: DIY Vari ND fail

Hummm, interesting experiment. Hope you have fun with it....
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Old 04-15-2014   #3
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Default Re: DIY Vari ND fail

While you're at it, have a look at those windows too. Looks a bit drafty....


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