Any ideas of a product that allows the use of circular filters in a 4x4" mattebox?
I have all 77mm filters, and a 4" x 4" mattebox, and I'd love to be able to slide them in and out easily.
I can't find nuthin'!
Such adapters exist, actually I made first such cheap thing years ago :-)
http://www.personal-view.com/deals/filters/other-filters-holders
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