To restore photos I have followed the steps below
Connect your Time Machine drive.
In the Finder, open the folder containing your iPhoto Library. Unless you've moved your iPhoto Library, it can be found in Home/Pictures/iPhoto Library.
Enter Time Machine. (Time Machine can be found in the Dock or in the /Applications folder.)
Choose your desired backup. The timeline on the right side of the screen displays a purple tick mark for each of the backups stored on your Time Machine drive.
Select the iPhoto library you would like to restore, and click the Restore button.
I dont get the option in step 6 as I dont have an iphoto library file to choose? Does anyone know why?