Pentax announce firmware update for K2000 Digital SLR In the cropping function of the Playback menu, added the ability to change the crop shape from rectangle to square. When the Help button is reprogrammed to Digital Filter, added the ability to engage the Digital Filter using the Help button in playback mode. Previously, this only worked in image capture mode. Added a Custom digital filter to the available filters in capture mode. This filter can be customized to the photographer's personal preferences, and saved.