<p>Application Field: Machine vision microscopic inspection</p> <p>Industrial testing, especially electronic component testing</p> <p>scientific research</p> <p>Education industry</p> <p>This zoom c mount lens is representing the standard main magnification 0.7X-4.5X, objective magnification 0.75X and TV magnification 0.5X.</p> <p>This product adopts the design scheme of limited far-conjugate distance optical system. Five basic modules are: continuous magnifying body, auxiliary objective lens, TV lens, bracket adapter and optional module.</p> <p>Optical parameters: </p> <p>Bulk ratio: 0.7X-4.5X</p> <p>System multiplier: 0.26X-1.69X</p> <p>NA: 0.012-0.053</p> <p>Working distance: 300mm</p> <p>Diagonal visual field: 22.86-3.56</p> <p>Matching camera size: 1\/3in</p> <p>Tips: The product may be updated constantly , Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use</p> <p>Material: Metal </p> <p>colour: Black</p> <p>Package Contents: </p> <p>1 x Lens</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>