camera improvement

I saw this article in xda feed and thought if it was possible to implement it to our device? OP also mentions that this could be achieved on other devices (with same chromatix). Update

EASY METHOD: For NON-ROOT and ROOT users: DON'T WORRY, this camera app will install as a seperate app so you will still have the original Motorola Camera app Here is the camera app with unlocked hidden menu FOR NON- ROOT and ROOT USERS. Just install as normal apk...

hi, i ve seen some ppl in the desc of their rom writing "camera improvement", but nothing much is said..and shows is it possible to have picture comparaison, stock rom / custom rom? any feed back from users? thx to mention what rom u used. thxxx