1/1.8" F2.5 F4.0 F5.6 F8.0 3MP 5.5mm Low Distortion M12 S Mount Far Field Telephoto CCTV Board Lens for Long Range Distance Vision

  1/1.8" F2.5 F4.0 F5.6 F8.0 3mp 5.5mm low distortion m12 s mount far field telephoto cctv board lens for long range distance vision SpecificationFocal Length :5.5mmResolution :3MP Format : 1/1.8"Mount :M12 ×0.5F/No :F2.5 / F4.0 / F5.6 / F8.0Back Focus:5.75mmIris Type : FixedAngle of View :  1/1.8''1/2''1/3''D (°)77.667257.2H (°)66.260.446.7V (°)51.346.735.6(Lens Effective Diameter :FrontΦ11.86mmBackΦ6.78mmDistortion :