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byvini Registered since 19th Apr 2013
Mon 16-Sep-13 03:43 PM

Hello guys,

I tried something different this weekend and I am trying to understand what went wrong.
I was playing around with the filters and I stacked a 10IR PRO (Format-Hitech) with a 0.3 and 0.6 ND from LEE.
The result was very near to what I was expecting.
However, you will notice that that the top left part of the image was full of sort of circular dots.
I am aware that shooting at f22 (i was using 16-35 f4) will bring every single dust in the sensor, but I am intrigued by those circular spots. The sensor was cleaned recently so I am not sure what is that and what could have possibly have caused the issue.
My filters are kept in a clean pouch and I also clean the filter after usage, specially on the beach. I also checked the lenses and it was perfectly clean. It wasn't raining, just a bit "beach fog".

Please see the image below.

Click on image to view larger version

what could possibly have caused the issue?
I know I can try and fix it in photoshop, just trying to avoid it next shooting.

Many thanks

byVini photography

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