This Kase Wolverine ND Filter Kit for Canon EOS-EF to EOS-R Adapterfrom Kase Wolverine ND Filter Kit for Canon EOS-EF to EOS-R Adapteris a filter holder designed to fit the Canon EOS-EF to EOS-RF lens adapter. This magnetic filter holder replaces the drop-in filter holder that comes with the lens adapter. It includes a 5-stop neutral density filter to increase the exposure over the entire image area. Increasing neutral density offers finer control in available shutter speeds or aperture settings for both still and video applications. Using a longer shutter speed makes it possible to increase motion blur to convey a sense of movement, or to dial in a video camera frame rate. Increased density also makes it possible to shoot using wider lens apertures, helping to isolate a subject from the background.

The filter is made from hardened, shockproof optical glass that features layers of multicoating for reduced glare and optimal light transmission. It also features a resistance coating on each optical surface that resists water, oil, dust, fingerprints, and scratches, making it easy to clean. This filter kit includes a leatherette storage case with a magnetic clasp.

1.5 Optical Density    Leatherette Case with Magnetic Clasp    Fits Canon EOS-EF to EOS R Adapter

Related Questions and Answers

Q: 1. Are there any astrophotography filters that fir this filter system?

A: I'm sorry, no.

Q: 2. Does this work with full frame camera and lenses?

A: Yes, this is for the EOS R system.

Q: 3. Is there a version of the drop-in filter mount that adopts PL lenses to RF?

A: This Fotodiox adapter is for PL lens to Canon RF camera and it has a built in ND filter. The filter is not drop in though. There isn't a version with drop in for that combination. https://www.bhphotovideo.com/c/product/1486458-REG/fotodiox_pl_eosr_ndthrtl_cine_vizelex_nd_throttle_lens.html

Q: 4. 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: 5. I am more concerning the image quality and autofocus speed when using this variable ND filter. Does it degrade the image quality or add othe color tone(s) or hue(s) to the captured image? Does it slow down the autofocus speed at all?

A: It works well , The darker the ND the slower the focus usually it gets , but in Mirrorless Digital Camera its not as bad , and it does not have a color shift

Q: 6. Does this include, or even support, the tripod "foot" (that comes with the $164 version, but not the $99 version)?

A: No.

Q: 7. Will this help dissipate heat for the Canon R5?

A: No.

Q: 8. 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: 9. Will other brand EF lenses with autofocus continue to work with this adapter?

A: All EF lenses with autofocus Will work same way as on an SLR. The adapter only compensates for the shorter flange distance of the mirrorless body. in addition the filter slot makes easy to use one drop-in filter for every lens no matter the size of the front lens thread.

Q: 10. Does this VND cause the "x"?

A: None that we can see. The ND stopped all the way down looks great with no X over the video.