Where are iOS 5 Camera Roll folders stored when synced with Windows?
The sync image location would be the same as the one you have selected as your Sync folder via iTunes Photo sync. I have also found a less complicated - drag/drop method for a two-way iPhone photo transfer between your device and the PC. It is less of a hassle since you can manage your iPhone photos, add and move them around and sync them to your PC directly from your computer.