Reading the MTF Chart: RF 28-70mm F2 L USM

Article ID: ART172289 | Date published: 10/22/2018 | Date last updated: 10/22/2018


Reading the MTF Chart: RF 28-70mm F2 L USM


A Modulation Transfer Function (MTF) chart measures a lens’ expected optical performance at the center of the picture area and measures repeatedly along the diagonal line, further and further toward the corners of the image. The higher a curve is shown on the chart, the better the lens is performing in the area the chart is measuring. As a curve moves from left to right, it displays the lens' results from center towards the corners.

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