This 5-pack of M12-Mount 2.8-6mm Varifocal Lenses from Axis Communications are replacement varifocal lenses for the Axis F1015 sensor unit. Each lens has a wide 108-53° horizontal field of view with an f/2.0 aperture to capture clear 1080p video in low-light scenes when used with the Axis F1025 sensor unit (available separately).