This little adapter has allowed me to use a couple of my father's vintage lenses on my Fujifilm X-T1. It's a well made bit of kit for the money. I have now ordered a couple more vintage lenses to give me a complementary set alongside my Samyang and Fujinon lenses. When some pretty tidy vintage lenses can be picked up for 30 quid each or cheaper, experimentation in manual focusing is within reach of everyone. Focus peaking on mirrorless cameras helps a great deal too. Highly recommended.