a bit of everything…

Olympus 150 – 400mm f4.5 Pro – [Details in the City]

DSLR vs Mirrorless Cameras: What’s the difference? (Tony Northrup).
Why Modern Lenses Use “Fake” Electronic Aperture Rings (Zy Productions).
It’s Time to Admit It: It’s OK to Use Autofocus for Video (Explora).
How to Work with Natural Light in Landscape Photography (42West).

Plenty of news on the facebook OMD group, Panasonic FF and the GH5 group.