Lyric Dark Shading
The Lyric Dark Shading filter is a stylizing effect that applies highly-controllable soft, dark shading to a video image. It first generates an overlay layer by multiplying a blurred copy of the source image with itself. This softened, dark layer is then Overlay-composited onto the source image through a controllable mid-tone mask. It can be used for generating a range of soft, low-key effects and even highly-stylistic effects with narrow tone-masks, as in the center example above.
The Lyric Dark Shading filter includes a set of effect controls that are common across all Lyric effect filters. For a detailed description of these controls, please see the Common Effect Controls documentation.
Additionally, all Lyric Effect filters can be applied through mattes or masks to constrain the filter effect to particular areas of the image. For background information on mattes and masks, please refer to the Lyric Matte Primer.
The Strength slider sets the opacity of the overlay layer, effectively controlling the strength of the effect. Softness sets the blur radius used to generate the overlay layer, increasing this softens the darkening effect.
The Tonal Center slider sets the midpoint of the luminance range that will be dark-shaded, the Tonal Range sets the width of this range and Tonal Rolloff controls how sharply the marsk falls off at the range edges. Moving the tone center higher causes brighter areas to be dark-shaded. Decreasing tone range limits the shading effect to smaller ranges of tone, producing the more stylistic effects, as does decreasng rolloff, which causes the edges of the shaded areas to become sharper and grainier.
The Effect Controls section is a set of common controls that are documented on the Common Effect Controls page. They can be used to achieve masked and other specialized filter effects.