MS stopped including Picture Manager in Office 2013.
But is still a way to get it for free. Picture Manager has been included in a couple of free downloads that you can get. Then you do a "customize" installation and select to install only Picture Manager.
If you just want MODI or Picture Manager 2007 or OneNote 2007,you can start the SharePoint installation process then select the “Custom” install option.
This will allow you to deselect SharePoint and any other product you do not want wasting space on your machine.
Download SharePoint Designer 2007- Do a “Customize install” to select SharePoint / MODI (under Office Tools) / OneNote/ or select only “Picture Manger” if that is what you want.