... :1 piece 4.Prompt delivery New design monofocal 35mm FA lens F1.7 manual iris camera accessory ... ,clear image,all-metal lens2.Fixed focal length 35mm,2/3 inch,C-mount,F1.7 aperture ... NumberABF-F3517MV-H 2/3"Focal Length(mm)35mm Aperture(F)1.7Format(inch)2/3MountCAngle of View18MOD ... CharacterManualABF monofocal manual iris lens serie: (6mm,12mm,25mm,35mm,50mm)ABF fixed focus auto iris lens series: ( ...