49mm Black Mist Filter 1 Special Effects Filter Ultra-Clear Multi-layer Coated With Waterproof Scratch-Resistant and Anti-Reflection Nano-Xcel Series

SKU: KF01.1661

Q
Are you able to stack additional filters ontop of this filter. Is there an inner thread?
Answer Question
A
There is an outer coarse thread although I haven't tried stacking another filter.