H&Y Filters 100x100mm K-Series ND16 (4-Stop) Filter w/Quick Release Magnetic Filter Frame 7x17 and an 82mm magnetic lens

and an 82mm magnetic lens cap

When to Use a ND4 Filter

or Snap-On Cap: Nylon

paired with a circular polarizer

38mm right

H&Y Filters 100x100mm K-Series ND16 (4-Stop) Filter w/Quick Release Magnetic Filter Frame 7x17 and an 82mm magnetic lensH&Y Filters 100x100mm K Series ND16 (4 Stop) Filter w Quick Release Magnetic Filter Frame Key Features Neutral Density Filter (ND16) (4 Stop) 1. 2 Optical Density Darkens Entire Image Reduce Shutter Speed, Widen Aperture For 100mm K Series Filter Holder 9 Layer Multi Coating, Optical Glass Quick Release Magnetic Filter Frame Magnetically Mounts on Holder Fast Use of Filter on Holder The 100 x 100mm K Series Neutral Density Filter with Quick Release