1. Havok

    an ND filter for my Tokina 11-16 F/2.8 ?

    Hello everyone So I recently tried out a variable ND2-ND400 filter from a friend that fits my 77mm thread sized Tokina 11-16 F/2.8 lens, and it seems to not work properly and cause "X" in the middle of the image. does anyone have any ideas on what kind of ND filter I should get? Thanks!