Basic Info

KNEE APERTURE

When the KNEE function is set to ON, the bright areas of the image are compressed so that the signal level falls within the video signal's dynamic range (Fig. 1). In this process, the luminance of the image is compressed, which can cause the contrast of the image to drop, and accordingly the solid appearance of the image to decrease.

In such situations, KNEE APERTURE reproduces the sharpness and solid appearance of the image, enhancing only the signals compressed by the KNEE function (Fig. 2). Although this function may seem similar to the DETAIL function, the two differ in that DETAIL emphasizes the entire luminance range of the signal, while KNEE APERTURE emphasizes signals only in the highlight areas that were compressed by the KNEE function.

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