This 39-58mm MCS Step-Up Adapter Ring from Tiffen allows Magnetic Control System filters to be quickly and securely attached to the front filter threads of a lens, eliminating the time and effort of threading filters on and off your optic. Step up from a lens's filter thread size to an MCS 58mm, 77mm, or 82mm filter. Installation is fast and easy and tools are not required. Versatile and easy to use, the adapter ring is also compatible with the 58 MCS protective lens cap, so the lens and filter will be protected when not in use.

For Magnetic Control System Filters    Use 58mm MCS Filter on 39mm Lens    Black Finish Minimizes Reflections    Knurled Sides for Firmer Grip

Related Questions and Answers

Q: 1. What does this look like compared to the Cavision 0.35 fisheye?

A: The Cavision .35x Wide-Angle Fisheye Adapter Lens will provide a slighter wider image with .35x magnification compared to the Opteka 58mm 0.3X HD Ultra Fisheye Lens Adapter.

Q: 2. Would it work on a Canon EOS R6 M2 and una Canon EOS 7D M2 , if not which would be the best option? Thank you in advance!

A: FotodioX 58mm Reverse Mount Macro Adapter Ring for Canon EF-Mount Cameras is compatible with the Canon EOS 7d Mark 2. For the Canon EOS R6 Mark 2 you would need this one FotodioX Macro Reverse Ring for Canon RF (58mm) https://www.bhphotovideo.com/c/product/1650731-REG/fotodiox_58_crf_macro_reverse_ring_58mm.html

Q: 3. Can you please tell me what reverse mount to use for Olympus OMD E-M1? Bought one that didn't fit. Appreciate your help.

A: If the lens you want to reverse has a 58mm filter thread, this FotodioX 58mm Reverse Mount Macro Adapter Ring for Micro Four Thirds-Mount Cameras is the correct ring.

Q: 4. what does the lens pouch look like?

A: I am sorry. We do not have an image of the pouch. It is a rigid, faux leather, u-shaped pouch with a fold-over closure.

Q: 5. Can I use this with the Cannon M50? If not please let me know how I can. Ty

A: This ring is for a micro four thirds camera and is not compatible with the M50. You can get a reverse ring for EF lenses and adapt it the EF-M mount. Click the links below to view; https://bhpho.to/3eJMwmw https://bhpho.to/39fa957

Q: 6. How does this matte box connect to lenses?

A: If you are using lenses with a threaded diameter then you also need to order the appropriate screw-in adapter ring / rings that go into the lens and then the matte-box clamps onto the outer ring circumference

Q: 7. Can you tell me which reverse mount to use with Olympus MOD E-M1?

A: This Fotodiox is compatible with the Olympus OMD EM1 camera as well as all other cameras that have a Micro43 lens mount and a lens with 58mm filter threads.

Q: 8. Is it compatibile with Genustech Height Extension Bracket?

A: Yes, the Genustech GWMC works with the Genustech Height Extension Bracket.If you do not need to adjust, there is this bracket that works as well.

Q: 9. What FOV does this give? Is it a full 180 degree?

A: The Opteka 58mm 0.3X HD Ultra Fisheye Lens Adapter is a fisheye adapter that will screw onto the front of your existing camcorder lens and bends a 180° view into a peephole-style circle.

Q: 10. Would this lens fit a vx1000? If not, what fisheye would fit a vx1000.

A: This lens will work withe SONY DCR-VX1000 camcorder. They both offer 58mm filter threads.