In the image produced by a lens, the frequency at which the contrast of the image falls to zero is termed the

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The frequency at which the contrast of an image produced by a lens falls to zero is termed the cutoff frequency. This term is used in optics to describe the highest spatial frequency at which a lens can form a distinguishable image of an object, beyond which the lens cannot resolve detail due to diffraction or aberrations.

In the Image Produced by a Lens, the Frequency at Which