Insert Variable ND Filter for M10 Holder System?

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.

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screw, screw and screw ...

Now, the Haida M10 Insert Variable ND Filter is coming~




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.

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Rotating the wheel on the CPL, adjust the ND to the stops you need.

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Ⅱ. Matches All Your Needs with Different Stops

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

How to use the Variable ND