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Help: Inverted Vignette IRND 1.5 Tiffen Filter

IRND Filter Filters Tiffen Vignette

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#1 JRJenkins

JRJenkins

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Posted 27 January 2016 - 05:54 PM

Hi,

 

I've had a Tiffen IRND 1.5 filter recently returned and the filter appears to have a darker center then the outside, almost as if where the 4x5.6 filter tray sits is one tone and the exposed filter inside of the tray is a darker shade.

 

Has anybody seen or heard about this before?

 

When placed in front of a camera, it's unseen, however very obvious to the human eye.

 

Thanks.


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#2 Dan Muchnik

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Posted 02 February 2016 - 06:56 AM

It's a center nd used to compensate for the harsh vignetting common on older super wide lenses shot wide open. As far as I can guess anyways...
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