This Aurora-Aperture Adapter for Canon EF-EOS R Lens Mount Filterfrom Aurora-Aperture Adapter for Canon EF-EOS R Lens Mount Filteris an ND filter with a 16x filter factor that provides a 4-stop exposure reduction. Its 1.2 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you can control depth of field and convey movement more easily. This neutral density filter is mounted within a durable, aluminum alloy filter frame that is made specifically to fit within a separately available Canon EF-EOS R Lens Mount Adapter. By mounting an Aurora Aperture Adapter Mount Format Filter inside a compatible lens mount adapter, that filter can be used for multiple lenses even if those lenses have differing or non-existent front filter threads.

This filter is constructed from Schott B270 glass for increased optical clarity as well as color fidelity, and each glass surface is multi-coated to prevent ghosting as well as reflections. The nano coating associated with the Adapter Mount Format PowerND 1.2 Filter for Canon EF-EOS R Lens Mount Adapter provides an additional layer that allows for more efficient cleaning when its surfaces come in contact with dust, dirt, water, or oil.

Snap-In Solid Neutral Density Filter    Fits Canon EF-EOS R Lens Mount Adapter    16x Filter Factor, 4-Stop    Reduce Shutter Speeds    Widen Apertures    Schott B270 Glass Construction    Multi-Coated, Nano-Coated    Water, Oil, and Dust Resistant    Durable, Aluminum Alloy Filter Frame

• Compatible with separately available Canon EF-EOS R Lens Mount Adapter
• Snap-in 1.2 neutral density filter darkens the image by 4 stops, allowing you to photograph with a longer shutter speed or wider aperture than normally required
• Filter does not affect coloration of the image
• Constructed from Schott B270 glass for increased optical clarity and color fidelity
• Multi-coated to prevent ghosting as well as reflections
• Nano coating allows for more efficient cleaning when the filter's surfaces come in contact with dust, dirt, water, or oil
• Durable, aluminum alloy filter frame

Related Questions and Answers

Q: 1. Does this filter work for the solar eclipse?

A: Yes, the Aurora-Aperture Adapter Mount Format PowerND 4.8 Filter for Nikon FTZ Lens Mount Adapter (16-Stop) can work for solar photography but I would recommend a filter that goes onto the front element of the lens to avoid any damage that can pass through internally.

Q: 2. Need aperture Control for Nikon F and G lenses for Z Cam E2S6 EF locking mount, would aperture control lever get blocked?

A: The aperture control on the Vello Nikon F-Mount G Lens to Canon EF/EF-S-Mount Camera Lens Adapter with Aperture Control should still be compatible for use when using the adapter on the Z CAM E2-S6 Super 35 6K Cinema Camera (EF Mount).

Q: 3. Does this filter sit in-between the sensor and the adapter, or in-between the adapter and the lens?

A: This filter will mount inside the adapter. It slides into the opening in the adapter.

Q: 4. Does it support auto focus and can the lens be removed from the adapter?

A: fd lenses do not have autofocus, so no, but yes the lens can be detached

Q: 5. Anyone have tips for composing/focusing with this. Would live view help at all on a 5D IV? I'm quite nervous about having to take the body and put the filter on in environments that this would be helpful in around waterfalls etc

A: HiCan't speak for the 5D MkIV but on my 5D sr the following is true. Using the EF 11-24 f4 at 100 ISO: with the 3 stopper the image is visible in LiveView, the focus points show and the focus square goes green. The exposure indicated on the screen is broadly correct and the viewed image in camera looks good, sharp and neutral to colour. So this would be the basis for your composition and exposure. As has been said already you will need a sturdy tripod and if you have a centre column collapse it. Focus as normal either Manually of AF but then turn AF off and don't touch the focus ring. Taping up the ring is a good idea as would be making a temporary register mark. Do not move the tripod when you remove the lens from the camera leaving the camera on the tripod of course. Swap out the lightest filter for whatever you wish to use. When you use even the 6 stop you will struggle to see live view for composition (&12 or 16 forget it) and my light meter reading was inaccurate. However, if you have followed the instructions so far when you remount the lens to the camera, you will be looking at the same scene as before. even if you can't actually see it! Double-check that the focus ring is still in the same place and focusing is still set to manual, then all you have to do is calculate the exposure based on the density difference between the first filter (3 stop) and whatever you have chosen. Its not rocket science but you will very soon find that your exposure will be 30 seconds plus so that means Bulb mode and a lockable cable release. The 5D sr has a count-up bulb timer to 999 seconds. You may find this useful, I had a play with the 16 stopper and ended up with a 2 or 3 stop underexposed photo at f4, 999 seconds and ISO silly. The colour noise was terrible but going down to ISO 100 and waiting even longer would probably be much more acceptable. Not sure if there is reciprocity failure at very long exposures but a good light meter would go a long way to finding a start point. Beyond that it is trial and error. Bruce Percy pointed out to me that if your histogram only goes halfway to the right you should at least double your time. Overall as a first look I am impressed with the kit. Undoubtedly very compact, might be a -go back to the car to change filters job- but I am expecting some seriously good results with this item. Hope that helps, probably not for the feint hearted but neither is the price of Lee's SW150, you would need to spend a lot more to get the equivalent filters at 150mm square.

Q: 6. Will the EF-EOS R mount adapters work with Canon 1.4x or 2x extenders, assuming the EF lens is compatible with the extender? (Seems like it would, but I can't find an official answer or someone who's tried it.)

A: Yes it will work

Q: 7. Will this adapter work for my canon rebel t5?

A: This adapter is compatible with Canon DSLRs such as the Rebel T5.

Q: 8. Does the aperture control click when changing aperture or is it smooth?

A: The Vello Nikon F-Mount G Lens to Canon EF/EF-S-Mount Camera Lens Adapter with Aperture Control, does not click, when one changes the aperture.

Q: 9. Can this work for both mc-21 and mc-11. I just want to avoid buying 2 pairs of same filtering

A: It is for the MC-21 adapter only. They make this one for the MC-11: B&H # AUPNDMC11N64 MFR # PND-MC11-ND64 https://bhpho.to/3fRDEiL

Q: 10. Does it auto focus when using canon ef lenses?

A: no it does not support auto focus, it's only manual and even the aperture number will not be seen in you camera