The Olympus OM-D E-M1 Micro Four Thirds is a compact mirrorless interchangeable-lens camera introduced on September 10, 2013.

As of October 2014, it had the highest camera sensor rating of any Olympus camera, according to DxO Labs, with a score of 73.

The Mark II features a slightly higher resolution 20 MP Live MOS sensor.

The Mark II also has substantially faster auto focus—according to the manufacturer, six times faster upon first focus acquisition than the original E-M1.

The camera also has a 60 fps max shooting rate in Pro Capture mode using the electronic shutter,[3] and vibration reduction technology in lenses as well as in camera.