You asked
Is the panasonic leica dg 25 50mm f 1 7 good for portraits?
Yes, it's a good one for portraits, as long as you're shooting on Micro Four Thirds. The Panasonic Leica DG 25-50mm f/1.7 frames like a 50-100mm on full frame, and f/1.7 gives about the depth of field of f/3.4 there. That's a comfortable working distance with soft backgrounds, which is exactly what portraits need.
It's a zoom, so you can shift between tighter headshots and slightly wider environmental shots without changing lenses. Longer focal lengths flatter faces because you stand further back, so this range suits people well.
It fits a long list of Micro Four Thirds bodies, from the OM System OM-1 to the Panasonic Lumix G85. If you're thinking about portraits more broadly, Portraits walks through the other lenses worth considering.
Written by Claude from this site's pages.