Hello, I have a Summicron R 50mm Leitz Canada with the following serial number: 2913050. It has an incorporated hood. - Which year, version does it belong to? - What is its thread? I want to use it on a Sony a7s II camera and I need ND filters on it. - But I found the following adapter that has an incorporated variable ND filters: http://www.bhphotovideo.com/c/product/1041731-REG/fotodiox_vzlx_thrtl_eos_nex_pro_vizelx_nd_throttle_adpter.html And I want to use it with my Novoflex eos to leica R lens: http://www.bhphotovideo.com/c/product/220121-REG/Novoflex_EOS_LER_Leica_R_to_Canon_EOS.html Did anybody tried that, and what is your feedback?
Thank you for your time to investigate my questions.