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 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.
One reason why the Lee Filters 77 Adapter Ring is popular is because of its Easy to use
Reviewed by 4 customers
This adapter ring fits easily into the Lee holder. It can be screwed onto your lens before attaching the filters. This allows you to compose your shot before attaching the filter(s).
I recently sold my 67mm lens and replaced it with a 77mm lens. Thus, to support my Lee Filter System, I needed a 77mm Lee Adapter. Nothing to add except this adapter, along with the entire Lee Filter System, is of superb quality. I use the Lee 10-stop ND filter and this adapter is necessary to attach to my 77mm lens.
Mounting the UWA adapter on a polarizer was an interesting experience to say at best. Got this one and life is soo much easier,not to mention you can mount the lens cap on it directly, I prefer it much more than the UWA
Is really well machinedand made. Easily screwed onto to the front filter threads of both my wide angle and telephoto flenses. The Lee filter holder quickly and easily snapped ont the adapter ring with a pull and a push of its spring clip holder. Works great.