Invert

The invert transformation inverts each channel of the input image, producing a negative version. This differs from the Color Negative transformation which is designed to convert film negatives to film positives by removing the masking layer and adjusting the image curves.

Amount

The amount control lets you control how much of the equalize transformation is applied to the input image. You can apply a percentage of the transformation to the entire image, or you can specify an amount mask to restrict the effects of the transformation to only part of the input image.

Note that setting the amount to 50% results in an all-gray image since the positive and negative images cancel each other out.

Color Space

This control lets you select what color space to use when inverting color images. The Color Space control is not displayed for black and white images.

RGB - inverts all three channels

HSV - inverts the V channel only

HSL - inverts the L channel only