The 77mm Freewell M2 Magnetic ND Filter 77mm 3-Stopfrom Freewell M2 Magnetic ND Filter 77mm 3-Stopoffers 3-stops of light reduction with the convenience of their magnetic quick-swapping system. Once the magnetic frame is screwed onto the front of your lens, different filters can be attached, removed, or swapped out quickly and conveniently. The reduction in light offered by the ND filter makes it easier to use lower shutter speeds or higher apertures in brighter conditions while also preserving colors and detail.

The German optical glass construction and multilayer coating make the filter scratch and oil resistant as well as water- and dust-proof. The included filter pouch and lens cap help you further protect your filter when shooting on the go and switching between densities.

0.9 Optical Density    Multilayer Coating    German Glass Construction    Darkens Entire Image    Easy Filter Swapping    Allows Longer Exposures, Wider Apertures    Plastic Case & Lens Cap

Related Questions and Answers

Q: 1. How many stops is the filter range?

A: The filter's wheel will cut light from 1 to 9 stops, or an optical density of .3 to 2.7. It is not know at this time (11/20/2018) if this filter will also work in lenses that have a similar drop in filter such as the 200-400/4/1.4x lens. An answer to this should be available in January.

Q: 2. Will canon r5 control ring and drop in nd filter adapter work together on eos r5c

A: No, it will not. If you plan to connect a Canon EF-mount lens onto the Canon EOS R5 C Mirrorless Cinema Camera, you may use either the Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter on your EF-mount lens or you may use the Canon Control Ring Mount Adapter EF-EOS R on your EF-mount lens, but you cannot use both on the lens at the same time.

Q: 3. Does this work with any android phone, or only Samsung phones?

A: The Freewell Bluetooth Smartphone Selfie Grip, B&H #FRFWSHGRIP, is compatible with Android or iOS smartphones that are up to 0.4" thick, 2.7 to 3.4" wide, and 12.3 ounces in weight.

Q: 4. Can a motor be put on the VND gear?

A: The VND gear on the Freewell Eiger Matte Box is meant to be a manual finger wheel. There is currently no motor for it.

Q: 5. Will it work on the Canon EOS C70

A: This would work on the C70.

Q: 6. How many stops of a ND filter is it?

A: Between 1.5 to 9 stops for the ND filter

Q: 7. Hello, I would like to know if a 2mm-thick filter is working with this mattebox ?

A: This matte box allows for the use of two 4x4" filters. It should accept any filter that is 4x4" in size.

Q: 8. Does this seriously not come with a cover for when the filter is not in place? That would be Canon's ultra-stingy style.

A: You can get Canon Drop-In Clear Filter A for when you don't wont to use a ND filter https://www.bhphotovideo.com/c/product/1434115-REG/canon_3444c001_drop_in_clear_filter_a.html

Q: 9. What is the width of the clamp? iPhone 16 Pro Max has many buttons on both edges.

A: The clamp of the Freewell Bluetooth Smartphone Selfie Grip, B&H # FRFWSHGRIP, is approximately 1'' wide. It can work with the iPhone Pro Max without interfering with any of the buttons on the side.

Q: 10. Is there a way to secure the adapter when using larger (cinema) lenses?

A: While the Meike Drop-In Filter Mount Adapter EF to EOS-R with Variable ND Filter could not be secured, you would have to secure the lens itself.