*Compatible lens: Canon EF series lens
*Compatible Cameras: Sony NEX series with E-*mount (Including Sony NEX full-frame camera A7/A7R/A7RII/A7RS)
*Front mount: Canon EF mount
*Rear mount: Sony E mount
*Tripod screw: 1/4 screw
*Max. diameter and length: 66.6 x 26.0 MM
*Weight: 128g