Canon EF-to-RF Adapters

Canon makes three EF to RF adapters:

bythom canon adapters
  1. Basic EF-to-RF adapter (left, above). US$99. This adapter is all most people need. Weighing in at 3.9 ounces (110g) and only about an inch deep (24mm), it provides the electrically connects to hook EF lenses to RF mount cameras. 
  2. EF-to-RF adapter with control ring (middle above). US$199. While much like the lower price model, this adapter adds the extra control ring present on some RF lenses, and configurable by most RF-mount bodies. A little heavier at 4.6 ounces (130g), it's still only about an inch deep (24mm).
  3. EF-to-RF adapter with Drop-in filter (right above). US$299 or US$399 depending upon filter it comes with. You have two choices, circular polarizer or variable neutral density filter. Still remarkably light at 4.3 ounces (121g), but the drop-in filter adds weight.

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