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Published on Apr 30, 2012
This is a demonstration of my Arduino-based Zoom - Focus controller mounted and bein used with a Lumix GH2. This demonstrates how the controller keeps my Nikon 28-85mm zoom lens in focus as I zoom in and out using the controller's power zoom. The controller calculates the ratio of Zoom steps to Focus steps and automatically moves the focus servo using that ratio, thereby keeping the lens in focus as the zoom servo moves the zoom in and out. You can find instructions for building this project, along with the Arduino code, from my post at Instructables.com: http://www.instructables.com/id/Ardui...