There are four resolutions available on the 2330L (800x448, 640x360, 480x272 and 320x176). I attempted to use scheduled events and ftp to grab snapshots of resolutions other than 640x360. When configuring a profile resolution, and then using the profile for an event that outputs a snapshot, the first two resolutions work fine. For the second two resolutions, instead of maintaining the full image view, events output smaller pixel dimensions of the full image view, with the upper left corner of lower resolution images anchored in the top left of the full image view. In other words, profiles at low resolutions incorrectly reduce the view area rather then reduce pixel dimensions of the full camera view. At the moment it seems likely that because of this fault, D-Link engineers abandoned the cgi profile calls for resolutions other than the current cgi default of 640x360. That is unfortunate.
Interestingly, the two lower resolutions work fine for video in the camera's browser video viewer.