You might remember Kickstarter’s 50$ Follow focus, a solid, inexpensive iteration of the typical rail-mounted follow focus. But what if you’re without rails? Enter the Lens/Focus Shifter, a Kickstarter-launched stand-alone follow focus that quickly straps directly onto the focus or zoom rings of virtually any lens. When paired with the included focus marker (that also straps to the lens), the Shifter greatly improves accuracy of fine manipulations while letting you draw on custom reference marks with the included dry-erase pen.
Head over to Kickstarter to check it out. To be clear, the Lens Shifter and Focus Shifter are both the same product; vote for the better name by pledging towards that product – 45$ shipped.