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. LEF7030040CA 70-300mm varifocal lens provide 6° - 29° 50' horizontal angle and support Auto-Iris functionality. f/4-f/5.6, Auto-Iris, Vari Focal | Recommended for 4K-7K H4PRO-B | Good.