Many modern camera lenses focus by moving the elements inside of the lens. But not all lenses focused like that. Modern large format and some medium format cameras focus with the use of a lens bellows. Part of this is because otherwise the lens itself would be huge. In today’s tutorial video, we show you all about focusing a camera with a lens bellows, the problems around them, etc. We don’t get into everything, but for the person looking to go big with medium format or large format, all this is great information to know.