Marshall Electronics' CS Mount Varifocal Lenses with DC Auto Iris. 3 Megapixel Day and Night Vari-Focal 1/3", DC Auto Iris from Fujinon. These vary-focal lenses are for use with Marshall VS-series CS mount MegaPixel Compact Cameras

Megapixel HD/UHD/4K VariFocal 1/3-1/2" CS mount lenses (manual & auto Iris)

HD/UHD/4K MP Varifocal Lenses are designed to deliver clear, crisp images with high optical MTF performance.
High accuracy aspherical lens elements, low-dispersion, and high refractive-index glass best suited for high performing color 1/3-1/2" HD sensors.

CS mount Varifocal Manual Focus Lens options for CV343, CV345, CV365, CV380, CV420
  Part No. Megapixel Rating Focal Length Horizontal AOV Iris F-Stop Focus Range from Front of Lens
CS mount 3MP Varifocal Manual Focus Lens from FUJINON VS-M226-A 3MP 2.2~6mm 129°~50° DC Auto
(4 pin)
F1.3 ∞ - 0.3m
CS mount 3MP Varifocal Manual Focus Lens from FUJINON
VS-M226-M-IRIS 3MP 2.2~6mm 129°~50° Manual Control F1.3~close ∞ - 0.3m
CS mount 3MP Varifocal Manual Focus Lens from FUJINON
VS-M288-M-IRIS 3MP 2.8~8mm 110°~30° Manual Control F1.2~close ∞ - 0.3m
 VS-M2812-2 Varifocal CS Mount Lens VS-M2812-2 3MP 2.8~12mm 98°~25° DC Auto
(4 pin)
F1.4 ∞ - 0.3m
VS-M419-6MP 6MP Varifocal CS Mount Lens VS-M419-6MP 6MP 4.1~9mm 72°~33° (1/3"),
97°~44° (1/2")
DC Auto
(4 pin)
F1.6 - T360 ∞ - 0.3m
VS-M550-4, 5-50mm CS-Mount F1.6 IR-Corrected DC Auto-Iris Varifocal Lens VS-M550-4 3MP 5~50mm 56°~6° DC Auto
(4 pin)
F1.4 ∞ - 0.3m
CS mount 3MP Varifocal Manual Focus Lens from FUJINON
VS-M1550-A 3MP 15~50mm 20°~6° DC Auto
(4 pin)
F1.5 ∞ - 0.8m