Onebooth has a mechanism to post pictures directly to your Facebook page in real-time.

You can only post to a Fanpage, but not to a private Facebook profile. If you want to share your posts to a private profile and/or moderate which photos are being shared, you can download the images from your campaign and upload them manually.

Note: When your users share GIFs and Boomerangs they will appear as still images in your Facebook album.