Yes, if the firmware is version 1.01 you can use 4GB cards. Checking the camera firmware version (current version 1.01) 1. Press the main switch to turn on the camera. 2. Press and hold the shift button (1) and press the menu button (2) to open the setup menu.(Confirm that the section 1 menu tab is highlighted.) 3. Press the display information button (3). A window will open to indicate the firmware version. 4. Check the version number of displayed on the LCD monitor. If the version is Ver.1.00, the camera must be updated. Press the central button of controller to close the version number display. You can find the firmware update and the firmware installation manual www.konicaminoltasupport.com (select the camera from the list)