The pro-series high-grade varifocal lenses from SENKO ADL are compatible with major-brand, day-and-night CS-mount cameras. The lenses have a fast f-stop with an IR corrective feature that eliminates focus shifting between day and night modes. The TV3X0310D model features a 3.0 mm to 8.5 mm broad focal range, f1.0 fast aperture and an extraordinary low dispersion glass element.