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Imaging lens: Variable focus / Macro zoom
Variable focus / macro zoom lenses are used to change the image magnification in various imaging applications such as microscopy and inspection. Macro zoom lenses are imaging lenses designed to be implemented in imaging systems. They are equipped with the ability to change magnification manually or electronically to accommodate diverse imaging requirements. Variable focus lenses, which also allow for refocusing when the magnification is changed, provide a convenient and consistent function across many different imaging applications.