Currently Being ModeratedDec 15, 2012 8:39 PM (in response to Steve J 1963)
Are you expecting to see the paper choice in the Aperture print window? If so it isn't there. After you have everyting set up in the Aperture Printing window you click on print then your Canon Printer dialoge box opens and you select your quality and media from there. If that is not your issue please post back with some more info.