FLEX Seamless Follow Focus Gears by Proactive Group

[shijan]

Anyone use this? Seems precise made and inexpencive (US $9.90 on ebay) compare to other rings. http://proactivegr.com/gears/

• The gears are designed for ANY LENS diameter from 50 to 93mm!
• Separate gear made for each diameter of 1 mm increments!
• The gears are made of rigid polyurethane, that stretches a little bit, when you put the gear on.
• The correct form of the teeth module 0.8.

 

[M Carter]

I've got some of those or similar. There's not much to a cheap chinese FF gears, just look for a size that works for you (like that one on the right is pretty gargantuan, but some rigs may need that). Didn't look at the video, but looks like these need a tool to tighten - you'll find you prefer the ones that use a knurled knob (I have both, having to keep the allen wrench close by is a pain). There's someone out there on eBay selling RedRock exact knockoffs, no tools needed, and more compact. But as far as basic functionality, anhy of these chinese rings seem to work fine and way better than those "zip-belt" horrific things.