The 77mm Skyeye ND Magnetic ND Filter with Adapter Ring from Kase absorbs 6-stops of light to slow shutter speeds for increase blur or for wider aperture settings for finer depth-of-field control when shooting in very bright conditions. The included magnetic lens adapter ring allows the filter to be used on a lens with 77mm front filter threads and mounted or removed more quickly than with conventional threaded filters.

Each surface of the filter's optical glass includes an easy clean resistance coating that resists water, oil, smudging and scratching. Up to four Skyeye filters can be stacked for even greater creative control.

The speed and versatility of the Skyeye filter system makes it an ideal choice for landscape and seascape photographers shooting under rapidly changing lighting conditions.

1.8 Optical Density    Optical Glass with Resistance Coating    With 77mm Magnetic Lens Adapter Ring    Darkens Entire Image Area    Allows Reduced Shutter Speed    Allows Greater Aperture Control    Stack up to 4 x Filters

Related Questions and Answers

Q: 1. Can you control White Balance Kelvin setting with the ring on this adapter?

A: No, the Canon Control Ring Mount Adapter EF-EOS R does not have the ability to control white balance, kelvin.

Q: 2. Do you have to assign a function to the control ring, or can you literally ignore the control ring?

A: You do not have to utilize the control ring on the Canon Control Ring Mount Adapter EF-EOS R. You can also get the version of the adapter that comes without a control ring: https://www.bhphotovideo.com/c/product/1433717-REG/canon_mount_adapter_ef_rf.html

Q: 3. Will the magmod xl for this?

A: The MagMod XL is not compatible with the MagMod MagBox Pro Speed Ring Adapter (Bowens), but the XL includes a Bowens mount adapter.

Q: 4. Why are you copying Fotodiox?

A: In reality, Fotodiox (a good company I do like, and I do use many of their products) is actually copying Canon. Canon makes the cameras with RF mounts and dictates the correct mechanical and electronic standards for them. Canon makes the RF lenses, EF lenses and EF-S lenses and dictates the correct mechanical, optical and electronic specifications for them. Fotodiox is riding on Canon's coat tails, and is only able to manufacture adapters thate are possibly "Canon comatible" because Canon allows it.

Q: 5. I assume this will work with the R3 when it comes out. Is this correct?

A: The Canon Control Ring Mount Adapter EF-EOS R is compatible with the Canon EOS R3 camera.

Q: 6. Does it works with the EF-S Sigma 8-16?

A: According to Sigma, the Canon Control Ring Mount Adapter EF-EOS R will work with the Sigma 8-16mm lens but the camera’s “Scene Intelligent Auto mode” cannot be used. Also the 8-16mm is a crop sensor lens so the camera would need to be a crop sensor model such as the R10,m R50, R7, or if you are using a full frame, the camera would need to be set to crop mode.

Q: 7. what s the difference between this adapter and the one without control ring? why do I want a control ring?

A: The control ring allows you to program the ring for different functions, such as changing aperture, shutter speed, etc... instead of using the controls on the camera. It makes it easier by assigning a common function to the control ring.

Q: 8. What is the difference between this ring and the adapter ring?

A: If comparing the Canon Control Ring Mount Adapter EF-EOS R B&H # CAMAEFRFCR to the Canon Mount Adapter EF-EOS R B&H # CAMAEFRF, the former model offers a control ring to allow the user to set various functions on the EOS R camera. Otherwise, both models allow for Canon EF and EF-S lenses to work on the EOS R with full autofocus.

Q: 9. How well does video autofocus work when using this adapter?

A: Autofocus is very good when using this adapter.

Q: 10. When this adapter is used to control aperture, does the camera focus at the set aperture, or wide open?

A: the camera focuses at wide open aperture