Adapter ring to use the HOYA Sq100 square filter system with various lenses.

The HOYA Sq100 Holder Kit principally includes two geared adapters which can attach the holder to a lens with a front lens diameter of either 86 mm or 82 mm. For other smaller lens sizes, Adapter Rings can be purchased that allow the holder to be attached to their corresponding size.

How to use
First, check the size of the filter diameter of your lens. The size is usually written on the back side of the lens cap, but can also be found in the manual of your lens.

After acquiring the corresponding adapter ring, attach the 86–86 mm geared adapter (included in the Sq100 Holder Kit) to the holder. Then, attach the adapter ring to the geared adapter. Now you can successfully attach the holder to your lens.

NB! Hoya Sq100 Holder Kit is sold separately.