1、Applicable Model: C Mount Lens, 180X zoom, adjustable magnification, suitable for VGA USB industrial video microscope camera. 2、Adjustable Magnification: The objective magnification is 0.7‑5X (about 10‑180X on the monitor), zoom ratio is 6.5:1, working distance is 90‑150mm / 54 ‑91in. 3、Field of View: Maximum multiple field of view is 8mm x 5mm, and the minimum multiple field of view is 25mm x 14mm, 0.5X eyepiece Lens. 4、Easy to Install: The microscope camera c mount lens is easy to install on the microscope and observe the internal structure of the object. 5、Durable Material: C Mount Lens is made of high strength aluminum alloy, which is rust proof and has good durability and stability. 1 x Microscope Camera C Mount Lens Item Type: Microscope Camera C Mount LensMaterial: Aluminum AlloyWorking Distance: Approx. 90-150mm / 3.54 - 5.91inZoom Ratio: 1: 6.5Magnification: 0.7 - 4.5X (About 10 - 180X Display)Maximum Multiple Field of View: 2.8mm x 1.5mmMinimum Multiple Field of View: 25mm x 14mmEyepiece Lens: 0.5XSize: Approx. 168mm x 50mm / 6.61 x 1.97in (L x DIA)