What exactly is back focus? In short: it defines the distance between the lens mount and the sensor plane – and is critical for ensuring accurate focus, depth of field, and distance markings. In other words: it’s a key factor, especially for cine lenses. But why is it so crucial, and how do you adjust it correctly?
In this video, our product manager Michael walks you through the back focus adjustment process step by step, using a fixed focal length lens – the Laowa Nanomorph LF 85mm – as a practical example. Perfect for anyone working with professional cine glass and relying on precise focus performance.
By the way: Adjusting back focus with zoom lenses works a bit differently. We will produce a separate video on this soon.
