I have several large directories of photos on my PC. I need to sort them and get rid of duplicates and junk photos. I want to do the sorting on my ipad. I can use iTunes to sync a directory of photos to my ipad but after sorting there is no way, that I know of to get the cleaned up photo directory to the PC. I thought about using Dropbox, but much of the time I will be sorting I will not have Internet available. Any suggestions?