I bought two of these from DCmall, as I have quite a collection of old M42 lenses and have just changed from Pentax DSLR to Lumix G2 Micro 4/3 . Very impressed with the build quality, and they have worked perfectly.
23/07/2015
Having previously purchased the Fotga adapter which i was very disappointed with ( loos fit on camera, M42 lens did not orientate properly on adapter, no aperture pin stop down ring, so purchased the K+F Concept one what a difference fits camera perfectly lens orientate properly with info at the top of the lens where it should be, aperture stop down ring built in so no need to have auto/manual switch on your M42 lens can use any M42 lens, very pleased with it should have purchased it first off but their ya go.
16/04/2015
Very happy with the service by DCMall who are supplying this adapter. They are professional, know what they are talkng about and very very good with their service. Will go back to them for all my camera kit!
30/09/2014