outer rim

  1. Cshore4

    Digital Concepts 3 piece gold series filter kit outer rim question

    I purchased a set of screw on filters , once installed the outer rim can still turn around, it has 2 dots on the face. Is there a certain position these dots should be in? Should the outer rim be able to turn after installed on the P3pro? Lens kit is digital concepts 3 piece gold series ND4...