Filtro variable ND para el sistema M10

We did little research recently. It seems many photographers are really tired while changing the Filter holders to the Variable ND. Which means they need to take the adapter ring off from the lens and then screw on the Variable ND. screw, screw and screw ... Product Name: Haida M10 Insert Variable ND Filter Size: 100*100 mm Thickness of Filter: 2mm Material: K9 Optical Glass Type of Filter: Drop-in Filter Variable Range: ND2-ND16, ND8-32, ND64-500 Features: Low Color-Cast Scratch Proof Coating Water Proof Coating R5 Rounded     WHY YOU NEED IT I. New Function for Your M10 Filter Holder System Combining with the Haida M10 Drop-in CPL, which makes the holder system become the Variable ND filter easily. Rotating the wheel on the CPL, adjust the ND to the stops you need. Ⅱ. Matches All Your Needs with Different Stops Combine with the Haida M10 Drop-in CPL Suggestion Stops: 1-4 stops (ND2-ND16) Combine with the Haida M10 Drop-in CPL+ND0.9 Suggestion Stops: 3-5 stops (ND8-ND32) Combine with the Haida M10 Drop-in CPL+ND1.8 Suggestion Stops: 6-9 stops (ND64-ND500)   Ⅲ. Different Size of Adapter Ring for Your Choice Combine with the M10 filter holder system, it can be used for different lenses with different sizes of the adapter rings. Available size: 37*0.75mm, 39mm, 40mm, 43mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm