Olympus 75mm f/1.8 for MFT has Shallow DOF and Pleasant Bokeh
For human beings: This lens can be used to take photos where only a very small part of the image area is sharp. The out-of-focus areas look pleasant and not restless or strange.
Its focal length and depth-of-field are similar to 150mm f/3.6-f/4 on a full-frame DSLR camera. That is enough for many uses. I had to use pretty high ISOs despite f/1.8 with my Panasonic GX1 camera. The 75mm should be much more useful with Olympus cameras that have in body image stabilization.
There is nothing wrong with Panasonic GX1 + Olympus 75 f/1.8 but Canon 5D mark III + EF 135 f/2 is a much better combination when size and price are not significant. Especially with moving subjects.