For video recording, having a headphone port enables the videographer to use a headphone to monitor the output of the microphone accurately if you are usin the microphone on the camera for recording sound.
Here we have listed the Latest 3 Olympus Cameras with Headphone Port sorted by date. Olympus E-M1 III is at the top of our list with a announcement Date of 2020-02-11, followed by Olympus E-M1X and Olympus E-M1 II.