One of my favorite accessories that debuted with the new mirrorless Canon cameras is the EF-EOS R Drop-In Filter Mount Adapter. This mount adapter allows Canon EF lenses to attach onto the RF mount, but also adds a variable neutral density or circular polarizer into the mix in one product.
For this video, Potato Jet takes a spin with the Canon EF-EOS R Drop-In Filter Mount Adapter and gives his thoughts on its design and performance. The variable neutral density filter is controlled with a small dial on the side of the mount adapter and is capable of blocking 1.5 to 9 stops of light. Canon also makes a circular polarizer version which operates the same way, allowing for variable strength of polarization.
The biggest downside with the Drop-In Filter Mount Adapter is that it does not come with any way to remove the effects filter and close the gap in the adapter. Instead, a separate $129.95 purchase is required to buy the clear drop-in filter. As with the clear drop-in filter, the variable neutral density and circular polarizer drop-ins are available as add-ons as well.
Do you own the drop-in filter adapter? Share your experience in the comments below.