You have 2 ways to transfer your photos from iOS device to iBridge:
1) Automatic backup helps you to backup your photos automatically after you plug in iBridge. The default directory is PhotoBackup folder.
2) Manual backup. Go to iBridge 3 app > Transfer Photos and select from Camera Roll to iBridge. Then select photos /albums you want to transfer and tap Copy icon at the bottom of the screen. The default folder for the manually transferred photos is iBridge Photos. (Read more here)
When you select From Camera Roll to iBridge, you will see All Items - it gathers all your photos from Photos app in one place.
You can also transfer the entire album, go to Albums at the bottom of the screen > Select Album > Copy items to iBridge > Done. You will find this album in Manage Files > iBridge Photos folder. All the albums you transfer will create their own folder in iBridge Photos default folder.