77mm ND Filters ND2-32 Adjustable, HD Ultra-Thin brass Frame, 36-Layer Anti-Reflection Green Film, Nano-Xcel PRO Series
SKU: KF01.1998
A
There is a front thread that allows another filter to be mounted in front of the Black Mist filter, as long as the two larger diameters are the same. For example, the filter is 67mm, then you need to install 72mm