About this item

Slim Adjustable ND Filter Feature
Comparison of effects

                          Without ND Filter
                               Use Contrast
                            With ND Filter

Comparison of ND2 to ND400

ND Filter Use Effect

Ensure no dark corner
Thin frame design of K&F Concept ND filter to ensure no dark corner, no vignetting around.

Note
When using the ND filter to the maximum(ND400) or bigger degree density, it will appear "X" spot or a blur in the picture,this is a normal phenomenon.
(Suggestion: lower down the density value gradually and reduce the aperture, until the facula disappeared.)