For an adapter from Fotodiox I decided due to a positive discussion in an English photo portal and have not been disappointed: the build quality is very good, the adapter can be easily mounted on the camera body (Sony A7) and the lenses raced a very good - with minimal play. The lenses could be easily disassembled again. My adapter even had a stand base, although not shown. The will, however, bolted two Minischräubchen to the adapter - if that is sufficient for heavier telephoto lenses? I have only been tested with lightweight lenses in Teleobjeektiven I am skeptical as to whether not but loosen the screws over time. The iris control an aperture ring works pretty well - and without vignetting - but getting used to, until you have found the desired setting. A Pro version with sound attached stand base seems to be not available for this camera lens combination. Conclusion: recommendable (supplied stand base ?, fastening) with restrictions.
