Opteka HD Graduated Color Filter Kit for Nikon D4s, D4, D3x, Df, D810, D800, D750, D610, D600, D7200, D7100, D5500, D5300, D5200, D3300 and D3200 Digital SLR Cameras (Fits 52mm and 67mm Threads) Graduated color filters provide a gradual color transition for a smooth blending effect High quality metal and HD glass construction Rotating frame to allow the user to bring the colored and clear filter portions into the desired position Double threaded allowing additional filters to be screwed one over the other Very easy to attach and use, works with all 67mm and 52mm threaded lenses Colored half that adds color to a portion of the image, while the clear half maintains a neutral color balance Useful for adding dramatic and creative effects to skies and other bright regions while retaining more realistic results within the other half of the frame Constructed from optical glass and set within rotating aluminum filter rings for controlling the placement of the color about the frame Front threads for attaching a lens cap or stacking additional filters for further creative effects