... resolution,clear image,all-metal lens2.Fixed focal length 50mm,2/3 inch,C-mount,F1.4 aperture manual lris lens3.CCTV ... inside are all 100% wel-environment glass.Specification: Model NumberABF-F5014MV-Y 2/3"Focal Length(mm)50mm Aperture(F)1.4Format(inch ... lens serie: (6mm,12mm,25mm,35mm,50mm)ABF fixed focus auto iris lens series: (2.8mm,4mm,6mm,8mm,12mm,16mm) Certificate ...