CCTV lens 1/2.5 inch 6-22mm 5MP M12 mount varifocal Lens F1.6 For 4MP/5MP CMOS/CCD Sensor Security IP/AHD Camera colour: black Material: metal + glass Model: FG-M12VF0622IR-5MP Pixel: 5MP length: 6-22mm Aperture: F1.6 : 0. Mount: M12 Image Format: 1/2.5 inch Field Angle Dx HxV(degree)(1/2.5 inch): 20.4 degree x 16.3 degree x 12.2 degree ~ 58 degree x 46.4 degree x 34.8 degree Back length: 6.2mm Flange backfocallength: 13.5mm Optical backfocallength: 6.4mm Weight: 30.6g IR Correction: Yes Dimension: diameter 28*45.3mm Focus: Manual Zoom: Manual Iris: Manual Included: 1 x CCTV Camera Lens Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Wide length 6mm to 22mm.long distance about 50m,High precision machining and optical design ensures that every length can get a clear image.Support IR Function,it can be used in the night. the coating machine for muti-layer coating has excellent transmittance,effectively stay light and halo features. lens has very precision ,It's that no loss of length in the night.lens has large aperture F2.0,it supports Starlight Camera,makes colourful image in night! it can be supported by OV4689/OV5658 Sensor Meterial is glass and metal case,no plastic,So it can be used for high temperature and cold environment(-20 to 60).