K&F MV35 77mm Variable Waterproof ND8-ND2000 Filter with Multi-Resistant Coating

Its great quality dynamic range all in one ND filter, perfect fit on Nikon D750. It adds great value in Natural Photography by adding dramatic effects through controlling light intensity from low to higher or higher to low range with just one filter being installed on the lens.
K&F MV35 77mm Variable Waterproof ND8-ND2000 Filter with Multi-Resistant Coating

From the packaging and presentation to the build quality and functionality, this is a very solid purchase. I am very pleased with this filter and plan to order more from K&F Concept in the future.
K&F MV35 77mm Variable Waterproof ND8-ND2000 Filter with Multi-Resistant Coating

It works but Vignetting is kind of heavy, I was hoping to get better results, works better with focals +50mm