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Calculating Lens Resolution with Precision

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The modulation transfer function is a formula for determining the resolution curve of a lens, quantifying factors such as diffraction and aberrations.

Nick Sischka, Edmund Optics Inc.

There are many different ways to judge the performance of a lens, depending on the application: weight, size, distortion, transmission, and resolution. Of these characteristics, resolution is often the primary cost driver for lenses, with higher-resolution lenses tending to cost more than lower-resolution ones. Maximizing the price-to-performance ratio for a particular system is critical, and too often buyers may overpay for a lens with higher resolution than needed or, conversely, fail to acquire a lens with a high enough resolution. This may cause designers to turn to cumbersome and...Read full article

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