If you have an oconnor Obox (comes with a 138mm Circular stage as do many other Matteboxes) these are great filters because they leave the two 4x4 or 4x5.6 filter trays available for Diffusion, and or grads.
[FS: General] ND .3 .6 .9 138mm Circular ND - $300 for all three
- Thread starter TimurCivan
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