Review on Enhance Your Photography with the Century 82mm Lee Wide Angle Adapter Ring by Chad Carter

This is a key part of the Lee system and I'm lucky because my UV filter is threaded and this adapter screws in easily. If I had to remove my UV filter every time, aside from risking the lens, it would add much more complex steps to the process and this expensive system wouldn't be all that useful. So if you make that investment I would say invest in a threaded UV filter as well and enjoy the Lee system! Doesn't matter! However, the downside is that if you want to remove a thin UV filter to install the adapter on another lens, it may get stuck in the UV filter and be very difficult to remove.