Seamless Flexible Rubber Gear Ring for FOLLOW-FOCUS systems, can be used with lenses that have a larger (1-4mm) FOCUS or ZOOM ring diameter. These follow-focus rings are a must to securely "cine-vize" your lenses, particularly older lenses like Takumar, Helios, etc. These rings can be used on focus, zoom, or iris rings to total cinema-level FF control!

A common mistake is to choose a ring based on the filter diameter. Wrong! Be sure to measure the actual diameter of the focus/zoom/iris ring before selecting a gear ring size.

Again, you can choose a slightly smaller size (within a few millimeters) and then stretch the ring to fit. A loose fit is no good!

The rings all have standard 0.8 mod PITCH GEAR with 83/98/114/130 teeth.

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