Difference between varifocal and motorized DVC camera - YouTube
Motor 5megapixel Varifocal Lens 5-50mm D14 Dc Iris Long Distance View With Motorized Zoom And Focus For 1080p/5mp Ahd/ip Camera - Cctv Lens - AliExpress
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HD 3MP Motorized Varifocal 2.8-12mm CCTV Lens 1/2.7' F1.4 M14 Mount Motorized CCTV Lens - China Motorized CCTV Lens and 2.8-12mm Lens price | Made-in-China.com
4K (8MP) Motorized Varifocal Smart IP Dome Security Camera
6-22mm Motorized Zoom Vari-Focal CCTV Lens 1/2.5'' Sensor 5MP F1.6 D14 Mount Lenses Motorized Focus DC Auto Iris Varifocal Security Camera Lenses - China Varifocal Lens, Motorized Focus Lens | Made-in-China.com