Seems to me that the out of focus results of the 50mm f/1,8 STM is a lot smoother than the Canon 50mm f/1.4. I just took this one from the front door of my house at f/1.8 to test the bokeh in this particular set of conditions and it seems pretty decent for a $125 lens
forum: Canon EF and EF-S Lenses
Sorry, I don't see any bokeh. There is some out-of-focus mid-tone rendering at infinity though, but to me, it looks a little smeared.