キヤノン ドロップインフィルター - クリア（別売）

It’s a relief to have this clear filter as a permanent protective layer inside the adapter—no more worrying about dust on the rear element when switching lenses. The drop-in design makes it incredibly quick to install and remove, which is a huge plus.

The clear filter drops into the adapter with a satisfying click, and I love that I can swap it out without unscrewing anything. It’s added zero color shift to my shots, which is exactly what I wanted from a protective layer.

I was worried about dust getting into my adapter, but this clear filter sits snugly and doesn’t affect image quality at all. It’s a simple, solid piece of glass that gives me peace of mind.