VILTROX M42-Nikon M42 lens to Nikon DSLR SLR camera F Mount Adapter ring With glass Infinity focus Nikon D7100 D7000 D5100 D800 D600 D90 This M42 to Nikon adapter is made of aluminum, with built-in correctional glass to allow INFINITY FOCUS It allows you to use M42 mount lenses and macro accessories on NIKON SLR/DSLR cameras by manual focusing under manual exposure control Compatible with: All M42 Mount Lenses Such as: Zeiss, Pentax, Praktica, Mamiya, Zenit ship by free registered parcel