Where you can indeed with the 50mm f2 also conjure wonderful portraits, however, have to take by the fixed focal length some minor limitations in market value and an additional for portraits almost too high initial aperture 35mm F3.5 added complication when, you go with this top Pro lens not compromise. The focal length range of 35 - 100mm covers just about everything from what is referred to as "typical of Portraits" in small format equivalent, the initial aperture of 2.0 is the FourThirds system perfectly adequate for a wonderful exemption and the bokeh which is conjured this lens just "creamy". In addition, if properly focused, a sharpness and detail that puts even several acclaimed prime lenses of other systems in the shade.
Who seriously wants to make portraits with the Olympus system and thereby make any compromises, comes to this gigantic lens sooner or later not around!
The two single downside are the rather handsome price and on time for the hand-held photography is not to be underestimated weight. But for the latter, there are monopods ...