Stop the writing on your Canon RF 10-20mm f/4L IS STM lens from appearing in your underwater images with Ikelite's Anti-Reflection Ring. It blocks the aperture, focal length, and other written information on the front element of the lens from being reflected in the interior of the dome port attached to your camera housing. Without the ring, these unwanted reflections could show up in your photos and videos. A self-adhesive vinyl surface enables easy attachment to your lens.

Prevents Reflection of Writing in Images

Canon:
• Canon RF 10-20mm f/4L IS STM

Related Questions and Answers

Q: 1. Is it made in Japan?

A: According to the information in our system, the Canon RF 50mm f/1.8 STM Lens is manufactured in Malaysia.

Q: 2. Any news on when it is approximately expected on b&h? Also the 85mm f2?

A: Unfortunately, we currently do not have a set ETA from the manufacturer on either product.

Q: 3. How do you manually focus this lens?

A: To manually focus when using the Canon RF 50mm f/1.8 STM Lens, you may set the Focus Mode in your camera to Manual Focus, then set the [CONTROL/FOCUS] switch built onto the lens to [FOCUS]. You may then rotate the control ring built onto the lens to adjust your focus. You can also press the [MAGNIFY] button (button of a magnifying glass) on the back of the camera to increase the magnification on the camera's LCD screen to assist your viewing during manual focus. If the camera is set to Autofocus and the [CONTROL/FOCUS] switch is set to [FOCUS], you should also have full-time manual focus override, allowing you to focus manually while the camera is still set to autofocus mode.

Q: 4. Will this work with the M50?

A: This lens will not mount onto the Canon M50 and currently there is no adapter for it to mount onto the Canon M50.

Q: 5. How big is the opening?

A: Unfortunately that is not specified by the manufacturer.

Q: 6. What lens hood will fit this lens?

A: Canon has a specific lens hood for it called the ES-65B (https://bhpho.to/3kblKpV) but you could also use a generic lens hood that screws into the filter threads as well.

Q: 7. Is it focus by wire?

A: Yes.

Q: 8. Is the lens hood for this lens the same as the one for the Canon EF 50mm f/1.8 lens?

A: The Canon 50mm STM RF lenses uses the ES-^%B hood which is not the same hood that the EF mount version uses. Please take a look at the following link: https://bhpho.to/3U4P0Bn

Q: 9. What is the latest firmware for this lens? Just got mine, the firmware version is at 1.0.0, checked Canon website... nothing so far.

A: Firmware v1.0.0 is currently the latest version at this time for the RF 50mm 1.8

Q: 10. I knew focusing on this lens would be noisy but my copy continually hunts focus. Is this normal or should I try another copy?

A: Doing a controlled focus test is the best way to determine what might be causing the lens to hunt for focus.