... PENTAX CAMERA: *ist D, *ist DL, *ist Ds, *istDL2, K100 Introduction:M42 to all Pentax PK mount adapter ring. Make M42 mount lenses ... (Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on Pentax PK cameras. There is no ... -A-18 SONY(A)-M4/3WTY-A-19 PENTAX K-M4/3WTY-A-20 EOS-M4/3 ... G-EOSWTY-A-109 W-TIANYA adapter ring Pentax M42 42mm to PK K Mount Adapter Infinity ...