Application Field: Machine vision microscopic inspection Industrial testing, especially electronic component testing Scientific research Education industry This zoom C mount lens features a standard main magnification range of 0.7X-4.5X, with an objective magnification of 0.75X and TV magnification of 0.5X. The product utilizes a finite conjugate optical system design. The five basic modules include: continuous magnifying body, auxiliary objective lens, TV lens, bracket adapter, and optional module. Optical Parameters: Zoom Ratio: 0.7X-4.5X System Magnification: 0.26X-1.69X NA: 0.012-0.053 Working Distance: 300mm Diagonal Field of View: 22.86-3.56mm Compatible Camera Size: 1/3 inch Note: Product updates may occur across different batches, resulting in slight variations in appearance or color, which do not affect functionality. Material: Metal Color: Black Package Contents: 1 x Lens The package includes only the items listed above; other accessories are not included. Note: Lighting conditions and monitor settings may cause slight color differences between the image and the actual product. Measurement error allowance is +/- 1-3cm.