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Description
Canon’s EF-EOS R mount adapters seamlessly connect your existing EF and EF-S lenses to the revolutionary RF mount system. From the basic mount adapter to advanced versions with control rings and drop-in filters, these adapters maintain full autofocus, image stabilization, and electronic communication between lens and camera. Expand your creative possibilities while preserving your investment in EF glass.
| Accessory | What it does |
|---|---|
| Canon Mount Adapter EF-EOS R |
The standard adapter to mount EF/EF-S lenses on EOS R cameras. No optics added—full AF/AE, EXIF, and IS are preserved. Compact, reliable, and ideal when you just need native performance from your existing EF glass on RF bodies. |
| Canon Control Ring Mount Adapter EF-EOS R |
All the benefits of the standard adapter plus a customizable control ring (assign ISO, aperture, shutter, exposure comp, etc.). Lets you keep tactile exposure control even when using EF/EF-S lenses—great for hybrid shooters and video rigs. |
| Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizing Filter A |
Adds a drop-in circular polarizer behind the lens—works with lenses that can’t take front filters (e.g., bulbous ultra-wides). Rotate the dial to cut reflections and deepen skies/water. Preserves AF/AE/IS; convenient, consistent polarization across your EF lineup. |
| Canon Drop-In Filter Mount Adapter EF-EOS R with Drop-In Variable ND Filter A |
Built-in variable ND for exposure control without changing shutter/ISO—perfect for video (180° shutter) and long-exposure stills. Adjustable density via the external dial; works with any compatible EF lens, including ultra-wides that resist front NDs. |
Notes: EF-S lenses mount and function normally; on full-frame EOS R bodies they automatically apply a ~1.6× crop.
The drop-in adapter is designed to be used with a filter inserted; an optional Clear drop-in is available if you want an unfiltered view.
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