C or CS Style security cameras can use many types of lenses. These lenses have variable-zoom/focus and auto-iris. They are great at delivering a good picture under changing lighting conditions.
These lenses have a range of manualy adjusted zoom and focus depending on the model you select. No guessing, these lenses can be set anywhere within the ranges listed for a perfect shot every time.
Choose from 3.3mm~8mm to 5mm~50mm sizes depending on if you need a wide angle or close up shot. The lower the first number, the wider the image will appear. The higher the second number, the closer the image will appear.