Nano-Xcel Series,ND2-400 and Black-Mist 1/4 2-in-1 28 Multi-Layer, 3 Cleaning cloth

What size lens cap does the VND filter correspond to?

This product can be installed with a lens cap, but the lens cap needs to be one size larger than this product. (For example: a 67mm variable ND filter requires a 72mm lens cap)

Does vignetting occur when shooting?

Taking pictures: There is vignetting up to 18mm, and it is recommended to use 19mm or later.

Taking videos: There is slight vignetting at 16mm, and it is recommended to use 17mm or later.

Can this product be used with a lens hood?

This product cannot be used with a lens hood.

Can I layer other filters when using the Variable VND?

It can be superimposed. If stacking other filters behind an adjustable filter, it needs to be one size larger.

E.g., 67mm adjustable ND filter, other filters require 72mm

What are the differences between the K series, D series, and X series?

The K series has 18 layers of coating and non-HD. The D series has 24 layers of coating and HD. And the X series has 28 layers of coating and HD, as well as being easy to clean and having a high anti-scratch rating.