Atlas Lens Co. has put out an informative video talking about what back focus actually means. The team breaks it down using their Orion 28mm T2 and shows how tools like the DENZ FDC Multi Flange Focal Depth Checker help calibrate precise flange depth down to the micron. Learn why even a hair’s difference can affect your image, and how to dial it in for perfect performance.
Back focus isn’t usually an issue when using PL mount lenses on PL mount cameras, as they should have already been factory calibrated out of the factory. Issues normally happen when you start changing mounts or using third-party adapters.
