the long forgotten camera patch BRAVIA v4 and X-Reality Engine v4 which has significant improvement.
the mirrors were not available lately anymore and it was hard to find thus heres my post for reminder.
the first link is the old version
second link is updated 2017 version from xda.
as far as i remember it has always worked for me on the k3 note.
official thread on xda:https://forum.xda-developers.com/android/software-hacking/recompeliren-bravia-engine-x-reality-t3141461
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BEFORE PICTURE: https://forum.xda-developers.com/attachment.php?attachmentid=3375176&d=1435049166
AFTER PICTURE: https://forum.xda-developers.com/attachment.php?attachmentid=3375178&d=1435049228
direct link to the uninstaller : https://forum.xda-developers.com/attachment.php?s=eb2db44c590a1ec2ef9d42becccfdc45&attachmentid=3378589&d=1435257359