This Light Pollution Drop-In Filter for EF-EOS R Lens Adapter from Kolari is compatible with Canon's RF lens adapter system. This filter features AR/AS coatings for increased transmission, reduced reflections, and easy cleaning. It is thickness matched to minimize focus shift.

AR Coating    Anti-Smudge Coating    Thickness Matched to Reduce Focus Shift

Related Questions and Answers

Q: 1. Once the polarizer or ND filter is removed do you have to put a clear filter in it's place is okay without a filter?

A: Yes, once you remove the polarizer or ND filter, you have to put a clear filter (BH #CADICFA • MFR #3444C001) in it's place.

Q: 2. How much light do you loose with the polarizer set at its minimum setting?

A: You lose about 3/4 of a stop at its minimum setting.

Q: 3. Can this adapter be used with the Canon TSE 17mm??

A: Yes, the adapter is compatible with the Canon 17mm TSE lens.

Q: 4. I am more concerning the image quality and autofocus speed when using polarizer filter. Does it degrade the image quality of the captured image? Does it slow down the autofocus speed at all?

A: It works well , does not change the auto focus speed and does not degrade the image quality

Q: 5. Is this adapter weather sealed?

A: This adapter is dust- and water-resistant, making it suitable for use in harsh weather conditions.

Q: 6. Can a drop in filter frame (w/o glass) like Kolari Vision B&H#KORDROPEMPT be used in lieu of the clear filter (w/ glass)?

A: The Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizer Filter only works with these filters at this time, https://bhpho.to/4ebpvc7 and https://bhpho.to/4dZOr66.

Q: 7. Description says "water-resistant". How water-resistant is the dial that you turn to rotate the circular polarizer? Usable in rain?

A: The Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizer Filter is useable in a light to medium rain.

Q: 8. Is there a case for the drop-in filter when not in use?

A: The filter that comes with the adapter does not come with its own case.

Q: 9. What is the actual diameter of the filters, and are they smooth or notched or threaded? I would really like to install narrowband 2-inch astrononomy filters.

A: Compatible filters are in a proprietary mount and no diameter size is given. There is no accommodation for any non-proprietary filters using this filter holder.

Q: 10. Is this the same size drop in filter that the EF 300mm f/2.8L lens uses? And is there a way to rotate the polarizer with it installed in the adapter, or would i have to remove it from the slot, rotate, and reinsert?

A: Yes, Canon PL-C 52WII 52mm Drop-In Circular Polarizing Filter https://bhpho.to/3iXpGgD