ModelNoSR12575ImageFormatCover1/3"1/2"2/3"FocalLength12.5-75mmMaximumApertureRatioF1.8-CIrisControlMethodManualFocusControlMethodManualZoomControlMethodManualAngleFieldofView(D×H×V)1/3inchWide21.2°×16.1°Tele3.6°×2.7°1/2inchWide28.3°×21.4°Tele4.8°×3.6°2/3inchWide38.7°×29.3°Tele6.6°×4.9°1inchWide***Tele***MinimumObjectDistance1.0mBackFocalLength17.19mmEffectiveDiameterFrontΦ44.0mmRearΦ13.0mmFilterScrewSize---MountCMechanicalDimension(D×L)Φ54.4mm×100.5mmWeight368.0gComments)