FOCAL LENGTH:20.7MM T1.927MM T1.937MM T1.957MM T1.977MM T1.8
CLOSE FOCUS:7.5″14″18″19″26″
WEIGHT:2.4 LBS3.6 LBS3.4 LBS3.5 LBS3.0 LBS
FRONT DIAMETER:104MM104MM104MM104MM104MM