AVIGILON™ in cooperation with world leader in photo lens manufacturing CANON® offers to equip HD Pro series IP security cameras with high quality CANON® lenses. LEF163528CA2 16-35mm varifocal lens provide 54° - 98° horizontal angle and support Auto-Iris functionality. f/2.8L, Auto-Iris, Vari Focal | Recommended for 4K-7K H4PRO-B | Highest image.