1/2.7 " 2.8mm,3.6mm & 8mm Lenses kits for CCTV Cameras Security Camera kit of CCTV Lenses with 2.8mm, 3.6mm & 8mm. Mount : 12 * 0.5mm(s-mount) No IR filter on these,they can see infrared light at night. So if the picture is pink,I think your chips needs to put on IR-cut. Image Format : 1/2.7"; they can working with 1/3,1/4 chips Package Content : 1 x 2.8mm, 1 x 3.6mm & 1 x 8mm CCTV Lens.