Free Shipping! IRIX Edge Gelatin Filter Set 5 Each ND4, ND8, & ND12 Gelatin Filters, ND4: 0.6 Filter Factor, 2-Stop Increase, ND8: 0.9 Filter Factor, 3-Stop Increase, ND16: 1.2 Filter Factor, 4-Stop Increase, For Select Rear Lens Filter Slots, 1.14 x...