Technology glossary
An open mount and system standard for interchangeable-lens cameras.
The standard lets bodies and lenses from different manufacturers work together. The sensor is in the 4/3-inch class, so the 35 mm equivalent focal length is roughly twice the lens’s focal length.
A matching mount does not mean every feature will work. On the OM-3, some functions such as 50 fps Pro Capture are limited to specific lenses.
Cameras · 2025
OM-3 is a mirrorless camera with a Micro Four Thirds mount and interchangeable lenses. Its metal body, inspired by old film SLRs, weighs 413 g. The stacked sensor and in-body stabilization stand out. It has one SD slot and no pronounced grip on the front.