ShowCase Photo and Video Camera Store demonstrates and reviews FocusShifter:
Demo and review from backer Dustin Blake (Indy Productions):
and the resulting video:
Demo Video of Focus Shifter Used with Hard Stops:
Videos From FocusShifter Owners
Original Kickstarter Video:
Kickstarter Video for FocusShifter DSLR Follow Focus with Balance Counterweight
The Focus Shifter is an inexpensive follow focus, or focus puller. It allows you to pull focus accurately and smoothly. Using hard stops, you can pre-set your focal stops, and hit critical focus points every time. Easily fits over most camera lenses.