You asked
Is the om system pen good for video?
The site doesn't cover the PEN's video specs, so I can't tell you how good its video is. Our OM System PEN page lists the sensor, stabilisation and splash resistance, but nothing about video. Check the maker's spec sheet before you buy.
For vlogging, the video guide suggests a front-flipping screen, a microphone input, light weight and a wide view of about 16-20mm full frame. On this camera's Micro Four Thirds mount, that means a lens around 8-10mm. The Panasonic Leica DG 9mm f/1.7 and the Laowa 10mm f/2 Zero-D MFT both fit that brief.
Written by Claude from this site's pages.