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, objective magnification of 0.75X, and TV magnification of 0.5X. The product uses a finite far-conjugate distance optical system design. Five core modules include: continuous zoom body, auxiliary objective lens, TV lens, bracket adapter, and optional module. Optical parameters: Magnification range: 0.7X–4.5X System magnification: 0.26X–1.69X Numerical aperture (NA): 0.012–0.053 Working distance: 300 mm Diagonal field of view: 22.86–3.56 mm Compatible camera sensor size: 1/3 inch Note: Product specifications may vary slightly between batches due to ongoing improvements. Such variations do not affect functionality. Material: Metal Color: Black Package Contents: 1 x Lens Note: Lighting conditions and display settings may cause slight color differences between the image and the actual product. Measurement tolerance: ±1–3 cm.