https://www.thephoblographer.com/2019/06/19/olympus-adds-m-zuiko-digital-2x-teleconverter-mc-20-firmware-updates/
Dion Crenshaw
flipped into Panasonic LUMIX FZ1000 and More
https://www.thephoblographer.com/2019/06/19/olympus-adds-m-zuiko-digital-2x-teleconverter-mc-20-firmware-updates/