PCS: How to Map a Focus Knob

In this video, we'll show you how to map a focus lens on a Preston Cinema follow focus system. Lens mapping eliminates the need to mark rings for each lens, greatly reducing prep time and standardizing all focus throws to five pre-printed rings, organized by close focus distance. For more information, check out the HU3 manual on our website: https://prestoncinema.com/#!/download...