A resolution quality redefinition control system for a multi function scanner/printer controls a plurality of functions executable such as scanning, printing, copying and faxing. Multiple resolution qualities may be selected by a user for any of the functions through a user input in communication with the controller. A designated quality resolution may not be appropriate for a designated function, however. Some of the functions have an optimal resolution and/or a significant range of resolutions. When the designated quality resolution is not appropriate for a designated function, the controller re-defines the designated quality resolution as an execute resolution for each execution of one of the functions. The execute resolution may be a higher one of the multiple designatable resolutions when the designated resolution is below the optimal resolution but within said significant range, may be a lower of the multiple designatable resolutions when the designated resolution is above the optimal resolution but within said significant range, may be a maximum resolution, may be a minimum resolution or may be a single optimal resolution.