Olympus OM-D E-M5 II lens mount_Leica R and the back is spacing

and the back is spacing correctly- and it has good light seals

Canon EF 16-35mm f2

No effect on function or view

but a good working option if you’re looking for a more portable 4x5 camera

Olympus OM-D E-M5 II lens mount_Leica R and the back is spacingThe Olympus OM D E M5 II is a very compact mirrorless camera with a high quality 16mp sensor, 5 axis image stabilizer, full 1080P video, 5fps continuous shooting with AF (10fps without), and WiFi connectivity. It handles well and moves quickly a great little unit. In excellent cosmetic condition, with approximately 57k actuations. Includes battery, charger, USB cable, HLD 8G handgrip, and HLD 6P battery holder.