|Posted: Thu May 25, 2017 10:33 am Post subject:
|I've tried the same, but with a simple adaptor not a speed booster as I also have all m42 or pk.
From my experience, I would say that if you are going down that route, try the Pentax OE ring convertor rather than a copy, as I did. The combination of the Chinese m42 to PK, on to a PK to m4/3 adaptor was too much to ask in terms of tolerances. Light was getting in.
Pentax OE ring convertors seem to be around £35, and say K&F boosters are now around £65. So the costs have narrowed somewhat.
Having said that, one layer of insulating tape around the joint of the combo I tried was effective, but not a great look. I junked it, but it was only a few quid to try it out.
I hope that gives some food for thought Eddie.