37-40.5mm Step Up Ring Aviation-grade Aluminum Filter Adapter Ring 2-pack with a Cleaning Cloth

SKU: KF05.329

Q
How do I choose a filter adapter ring of the right size?
Answer Question
A
First, determine your lens diameter (the number after the ΓΈ symbol on the front of the lens, such as 58mm), and then confirm your filter size (such as 77mm). You can choose a filter adapter ring of 58mm-77mm.