Daniel shows us 2 very affordable ikan follow focuses. The F3 is really a friction kind of device for the cameraman who wants the pulling all for himself. You can attach this to any lens and it will allow you to pull the focus with your “free” hand.
The FGK is a conventional geared follow focus unit at a very competitive price.
Both units are part of the ikan “Elements” system. As far as I can tell that’s a dslr camera support system with a lego kind of approach: You can create different setups out of many modular pieces.
If you’re interested in this system you should check wether or not it can be easily collapsed and put together and let us know. Because in my experience rigs with many knobs and points of articulation can be difficult to work with albeit being versatile.