Lenses & optics
Lenses & optics guides
Focal length, field of view, telecentric optics, mounts and resolution: picking the lens that makes the measurement possible.
Lenses & optics · GuideWhen you need a telecentric lens for gaugingWhy a standard lens mis-measures parts that move or vary in height, how a telecentric lens fixes it, and how to choose magnification, field and lighting.Lenses & optics · GuideHow to choose a machine vision lens focal lengthWork out the focal length from sensor width, field of view and working distance, then check close focus, resolution and distortion. With a calculator.
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