Hi, sorry for my english review, but writing in German is to difficult for me i have this adapter for my Canon FD 50mm F1.4 i use it on a Olympus OMD EM5 i am very pleased with this adapter its a hunk of metal, beautiful mat black finish inside and outside its fits perfect on my camera and the lens fits perfect on the adapter Brought it back to life my old 50mm more thing on the shelf for years using it shows no reflection on the photos even in bright sunlight with the cropfactor of the camera it is a 100mm F1.4 on my EM5 it dont think it is waterresistant, do dont try in the rain but well worth its money