So how was that with the dues? It is very clear, with an expensive follow focus, this tool can not keep up. But it's also just something else to compare it to a professional FF it would be wrong.
This equipment is capable of smooth and consistent draw as with the bare hand.
The camera is mounted on a tripod and you want to gently focus on the width to a nearby one makes the thing a good job and the focus can be pulled real smooth. Operated for use with a camera out of his hand, the principle simply does not work, because you just need the second hand also to hold. Since it is advisable to focus with his bare hands. (When using a DSLR)
The mechanism with the silicone band itself works well, but in the long run it is of course a little looser, but should not be tragic.
Conclusion:
To award five stars would be in my opinion a bit steep for this product, but I forgive three star. Since it does not have as much to do with a FollowFocus, but still is a tool which allows you to draw the focus softer and more beautiful.