Is the olympus m zuiko 8 25mm f 4 pro good for portraits?

Not really. I'd keep the 8-25mm f/4 PRO for travel, street and general walk-around shots. On Micro Four Thirds it frames like a 16-50mm on full frame, which is a wide-to-standard view. Portraits points out that very wide lenses exaggerate whatever is nearest the camera, which is the last thing you want for a face. At f/4 it also won't give you much background separation.

For portraits on Micro Four Thirds, look at the Olympus M.Zuiko 25mm f/1.2 PRO, a 50mm equivalent, or the Olympus M.Zuiko 45mm f/1.2 PRO, a weather-sealed 90mm equivalent portrait prime. The lens section of the portraits guide explains why the longer focal length flatters faces more.

Written by Claude from this site's pages.