Almost all major camera makers have, by now, announced one form of software or another that turns a select number of their cameras into hi-res webcams. The motivation behind this push is hardly any secret as anyone and everyone tries to ride the Zoom wave. Unfortunately but unsurprisingly, only a few camera models are supported and most of them start off supporting only Windows. Owners of Olympus’ OM-D cameras with Macs might be happy to know that they’re no longer being left out of video conferencing party.

Canon kicked off the webcam campaign last April and others followed not long after. It was also the first to add support for Apple’s computers. 
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https://www.slashgear.com/olympus-om-d-webcam-beta-is-now-compatible-with-macs-26635090/