Fred Miranda wrote:
Yes, I also tested it on the Voigtlander 50/1.5 Heliar which just like the Triopan is a soft focus low contrast lens wide open. Surprisingly the LM-EA9 worked well with these two lenses.
As you know, wide angle lenses are much more sensitive to poorly manufactured adapters especially insofar tilt is concerned. Lenses with floating elements are sensitive to the adapter length, with wideangles again being more sensitive than longer focal lengths. I don't have experience with the Trioplan, but I believe that neither it and definitely the Helier do not have floating elements and certainly with the Heliar's spherical aberrations tilt becomes very hard to detect.