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DPChallenge Forums >> Hardware and Software >> Filters for Sigma's 15-30
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 06/15/2008 06:49:53 AM · #1
I have a Sigma 15-30mm for my Nikon. I just found out tonight that it can have a rear gelatin filter. I'm not quite sure how those work or where I could buy one. I want to get an ND filter that is dark enough to take long exposures in sunlight, but the ones I think are the right kind are only like an ND.6 which I don't think is that dark. I used to stack two or three 4's and 6's on my sigma 28-70 that came with my camera.
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