You asked
What is the tamron 14 150mm f 3 5 5 8 di iii good for?
This is a Micro Four Thirds travel zoom. On a Micro Four Thirds body it frames roughly like a 28-300mm lens on full frame, so one lens covers wide scenes, everyday subjects and some distant ones without swapping. It's a good pick if you want to travel light and don't want to change lenses much.
Be aware of the trade-offs. It isn't stabilised, and at the long end the aperture narrows to f/5.8, so it needs decent light when you're zoomed in. It's also discontinued, so check used stock.
It fits a long list of Olympus OM System and Panasonic Lumix bodies. For a sensible everyday pairing, try the OM System OM-5 Mark II or the OM System OM-1 Mark II. For how focal lengths translate, see the focal length guide and the focal length converter.
Written by Claude from this site's pages.