a bit of everything…

Olympus 40-150mm F2.8

The Quality of Light: Why different kinds of lights affect how we see (DpreviewTV).
Tips for Building a One-Light Portrait Kit (Explora).
H & Y announced a new filter holder for the Olympus 7-14mm lens (DC.watch).
5 tips for halloween portraits by Gavin Hoey.

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