I have the loan of a Helios 44M-4 58mm f2 lens to use on my Fuji X-T1 but haven't been able to get out until this morning to try it.
The eldest wanted to take the dog out so after I had picked myself up and checked he wasn't a robotic replacement I bunged the camera over my shoulder and we went down to our local beach for an a bit of fresh air before breakfast. The lens isn't biting sharp wide open but at f2.8 it is not only sharp but still gives a nice background separation. There are hints of the swirly bokeh it is famous for showing but I need some sunlit trees or similar to get spectral highlights and really get it to produce the goods.
If I get the nod I'll say where I got it from...