Well I have to say they don't get much use these days, but I have a 10d and a 6c with the 24mm black f3.5, 40mm f2.8, 50mm f 1.9, plus the Alpa to Leicaflex adp so I can also use my 35mm f2.8 and another adp to use my visoflex lenses on the Alpa.
wbill