I have just updated my iPad to ios7 and lost all my photos I had stored on the iPad from my camera, is there any way of retrieving them?

Hopefully you can restore from a backup > iOS: Back up and restore your iOS device with iCloud or iTunes

"Photos and videos in your Camera Roll are included in your iCloud backup and will download to your iOS device during the restore process"

Click Photos here > iCloud: Troubleshooting missing information after restoring an iOS device

iPad Photo Recovery: How to Recover Deleted Photos

http://www.iskysoft.com/iphone-data-recovery-mac/ipad-photo-recovery.html

How to Restore Lost or Deleted Files from iPad

http://www.iphone-ipad-recovery.com/recover-ipad-mini-files.html

How to Recover Deleted Files from iPad

http://www.kvisoft.com/tutorials/recover-deleted-files-from-ipad.html

iSkysoft Free iPhone Data Recovery

http://www.iskysoft.com/iphone-data-recovery/

Recover iPhone/iPad/iPod touch lost data, Free.

• Free recover iPhone/iPad/iPod touch lost contacts, photos, videos, notes, call logs and more
• Recover data directly from iPhone or from iTunes backup
• Preview and recover lost iOS data with original quality

Wondershare Dr.Fone for iOS

http://www.wondershare.net/data-recovery/iphone-data-recovery.html?gclid=CJT7i9e 6gb4CFcvm7AodbUEAJQ

Recover contacts, messages, photos, videos, notes, call history, calendars, voicemail, voice memos, reminders, bookmarks and other documents.

iPad Data Recovery Software (PC & Mac)

http://www.anysoftwaretools.com/ipad-data-recovery.html

 Cheers, Tom 😉

In fact, it is very easily to recover lost ipad photos. You can use MobiKin Doctor for iOS program to retrieve lost photos from ipad. Believe it can help you!