Sony a7 very strange issue...

Started Apr 17, 2014 | Discussions thread
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j0sh
j0sh OP Regular Member • Posts: 354
Re: Faulty ND filter?

j0sh wrote:

Here is a sample

Yeah, that's strange alright.

My guess would be that the ND filter is some type of sandwich using gel filters and the gel has shifted slightly or been bleached over time and exposure to light. If so, this should be visible inspecting the ND filter directly. This almost looks like a badly-made homemade ND filter constructed using a piece of exposed film... not that I'd ever do that (again).  

The other possibility would be a loose mask in the light path (e.g., inside an adapter), but that seems less likely given that you say it only happens with the ND filter.

Yeah and just in landscape mode O_o
No issues in portrait mode...
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Please check my pics on http://www.flickr.com/photos/giuseppemilo/

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