Compatible with all DSLR cameras, video cameras, HDV, DV, specially for HDSLR camera with movie function. 

Features: 

- universal design will work with most follow focus systems (standard 32 pitch - 0.8 mod)

- Includes pack of 3 85 mm Lens Rings 

- Features large pitch diameter for more accurate focusing 

- Durable construction 

If you need just one (instead of a pack), message me :)