Adaptor rings fit into the lens to accommodate the filter holder. Once the adaptor is in place the filter holder clips firmly to it using a smooth, quick-release, spring-loaded mechanism.
Sturdily constructed with an aluminum screw thread, the adaptors are available in both standard and wide-angle configurations. Special sizes can be made to order.
The wide-angle adaptors are designed so that the filter is placed as close as possible to the front element of the camera lens, and should be used to prevent vignetting with wide angle lenses.
Reviewed by 1 customers
When I finally got my Lee foundation filter kit, I ordered the standard adapter ring. During my initial use, I noticed some vignetting when the focal length was short. I called the supplier and they suggested going with the wide angle adapter ring. So far I've not had any issues with vignetting so I'm pleased with it. Lee products are well made but unfortunately take months to get due to the high demand. Fortunately, Adorama had the size I needed so I got it pretty quickly. I would definitely use the Lee filter system but get your order in. The wait will be worth it.