Hi, I learnt that during the 60's Schacht Travenar produced three M39 lenses with Leica's permission - 35mm/3.5, 90mm/2.8 and 135mm/3.5. My friend bought a set recently and with the adaptors he used them on his M, the photos that he shown me were stunning. I am tempted but before I commit I wish to have some comments about Schacht optic from you guys. Thanks a lot for your help. BTW, please spare some time and visit my gallery at www.1388.com/photogallery which I have added many new images lately. 80% of the photos were using Leica. Cheers!