Add a spare or replacement ring to your Koop rear filter kit with this Magnetic Base from DZOFilm. The magnetic base is a ring that allows you to quickly install a single rear filter onto your Vespid or Catta Ace lens. It is the same ring that comes in the Koop rear filter sets.

Metal Magnetic Base Ring    Quickly Installs a Single Rear Filter    For Vespid/Catta Ace Lenses    Adds Spare Ring to Koop Rear Filter Kit

Related Questions and Answers

Q: 1. Can I mount this on any action camera with a 1/4' hole to use on my Dji action magnet base?

A: No, the 1/4" thread on the Falcam F22 Magnetic Action Camera Base is for mounting the base to a tripod or stand, not for attaching the base to a camera.

Q: 2. How many shims in a set? What are the thicknesses of the shims?

A: There are 8pcs shims in the DZOFilm Shim Set for Koop Rear Filters And the thickness is, Koop shims set (0.5mm*1，0.3mm*1，0.1mm*3，0.05mm*1，0.03mm*1，0.02mm*1）

Q: 3. does this fit canon 500 f4 first generation?

A: Hi, yes, this filter will fit the first generation 500mm f/4L lens.

Q: 4. Polarizer filters can vary quite much in quality. Does anyone know who makes the glass in the filter ? Is it Canon ? The convenience of being able to change the polarizing effect by turning a wheel is very nice as opposed to taking the filter out and rotating the metal ring on a metal and glass filter and then putting it back in the lens. That would be very tiring to try to get the polarizing effect you want. It looks to me that you can't change out the glass in the filter if you wanted to and that is the only point that I do not like about this filter.

A: This filter is made by Canon themselves for a variety of their fixed focal super telephoto lenses. The optical quality of this filter is every bit as good as the lenses it is designed for use in. Canon knows their customers and the types of shooters that buy these lenses and the quality they demand, and this filter adheres to their strict quality control and delivers what youd expect of it.

Q: 5. Does this filter fit the Canon EF 600mm f/4 L IS II lens? Thanks.

A: Yes, it will fit and function just fine. This one is the older version designed originally to fit the Version I IS super-telephoto lenses, however, despite the fact that Canon has marketed a newer version II for the MkII lenses, this older MkI is completely compatible.

Q: 6. The photo shows the filter with a magnetic base. Is the magnetic base included? In photo but not listed in description.

A: DZOFilm Koop Rear UV Filter BH #DZOKFUVSGL doesn't come with a magnetic base. There is a separately available Koop magnetic base.

Q: 7. Is a GoPro HERO11 or HERO12 with this base installed still water resistant?

A: Yes, the GoPro Hero11 and 12 will still be water resistant with the Falcam F22 Magnetic Action Camera Base.

Q: 8. Which GoPro models is this 'Falcam F22' system compatible with?

A: The Falcam F22 Compatible Magnetic Base is compatible with the GoPro Hero 8,9,10 and 11.

Q: 9. Will this work in a Canon 300mm 2.8 IS first version?

A: For 300 f2.8 IS first version you will need Canon 2585A001 52mm Circular Polarizing Filter (Rear Drop-in) BH #CACPDI52 • MFR #2585A001

Q: 10. Can these work with Canon RF to EF Adapter too?

A: The DZOFilm Catta Coin Plug-in Filter for Catta Zoom (Artistic Set) is made specifically for the Catta Zoom lenses with E/RF/L/X/Z mounts and not to be used with lens adapters.