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Reducing Cokin-P Vignetting
Posted By: fried_bread, 05-18-2014, 12:09 PM

The Cokin P W/A HOLDER ( BPW700A) does not vignette with the sigma 10-20mm f4/5.6 at 10mm with the holder in the 'normal' ( Filters slide vertically ) angle ( Remember to remove any skylight filter! ) . Rotate holder 45 degree's and the frame still just intrudes .

Similar results obtained with a modified standard older + hacksaw + 5 minutes - Still has the 45 rotation problem !

A bit of extra surgery removes the intrusion ! - See the picture

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Last edited by fried_bread; 05-19-2014 at 12:12 PM. Reason: Added notes to picture for clarity...
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