Camera App keeps on updating
The notify when updates are available option has no effect on auto updating apps. You need to disable "Auto Update Apps" right below that option. Also, in the Play Store, go to the camera app listing and tap the menu button (either physical menu key if equipped or the 3-dot menu in the top right) and make sure "Auto Update" is not checked for the camera app. This should prevent it from updating. Keep in mind this update will still appear in your list of app updates in the Play Store, so you will be unable to use the "Update All" function since this will include the camera app in the apps to be updated.