Delete photo in iPhoto
How do you delete a photo in iPhoto?
iPad, iOS 6.0.1, IPad 3
If you edited the photo in iPhoto use the revert to original choice in the gear wheel icon.
Deleting the photo depends on how the photo was copied to your iPad.
If the photo was copied from a website, downloaded from a camera or SD card, or received in an email use the Photos app to delete the photo.
If the photo is in an album that was synced from a computer, use that computer to move the photo out of the album it is in then resync your device with the computer.