A different operation would be better, though the operation in question exists in GIMP and not in GEGL. This is because the curves op in GIMP is not properly migrated/implemented to be part of GEGL, it is controlled with properties on a "configuration object" and thus as-implemented is only suitable for use internally in GIMP. It is probably better to create a new component-curve-remap op that is configured with a curve property in a similar way to curve-contrast; that can be configured similar to the curves tool in GIMP while also making sure it works well for values beyond the 0.0-1.0 range. The existing curves op in GIMP will likely end up disappearing if all ways of configuring it still are valid. For now, please file a feature request in the GEGL issue tracker in gitlab. /pippin _______________________________________________ gegl-developer-list mailing list List address: gegl-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gegl-developer-list