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Line 13: The OTF accounts for [[aberration in optical systems\|aberration]], which the limiting frequency expression above does not. The magnitude is known as the '''[[Modulation Transfer Function]] (MTF)''' and the phase portion is known as the '''[[Phase Transfer Function]] (PTF)'''. In imaging systems, the phase component is typically not captured by the sensor. Thus, the important measure with respect to imaging systems is the MTF.

Optical transfer function: Difference between revisions