Q: my photos are missing.  Vanished.  Help!

Have the photos been in the Camera Roll or Photo Stream? Or synced to your iPad? Have you used iPhoto on the iPad?

The Photo Stream photos and Camera Roll are now part of other albums.

Synced photos will need to be synced again.

See these two links:

• Get help finding your Photos in iOS 8
• Migrating from iPhoto for iOS to Photos on iOS 8

Did you check the Collections tab? If your photos are not present there then copy those you want back on your iPad from your photos backup.