I used to have the same problem. but i found solution which is downloading alternative application for macro mode
i am now using FV-5 camera application which has macro mode. and it works pretty good as note 2 which i used before note 3
i recommend this app for whomever has been suffering from this issue.
in my opinion there is no problem in terms of soft or hard ware. i dare assume that samsung didn't add this function for some reason.