I have been working for many years in portrait photography and use for a few months this 75mm lens on my Olympus M1. Exemption, sharpness and bokeh in my view simply superb. In accordance with a fixed focal length, the light intensity is very high, even in the early dawn I shoote often at open aperture and 400 ISO. The lens is very fast, very reliable and focused is my favorite lens on the M1.
The only drawback: at the price we must not expect a splash protection and a dust seal. The lens hood can pay Olympus well. Nevertheless 5 stars for a superb product.