Hey, but cornefix get's rid of cyan vignette created by wide-angle lens (even miniaturized one, like in our device), while exiftool can alter - as name suggest - exif, including black levels.

geohsia, why You think the tools are exclusive? It seems, that they should work in tandem nicely - using exiftools to fix black levels, and cornerfix to get rid of vignette.

/Estel