Here's a real head-scratcher...
As Canberra experts will know, the Canberra PR9 carried tips tanks (when required) on the original B2/6 wing tip, so they were slightly inboard of the extended PR9 wing tip.
However, WH973 appears to be the one exception to the rule:-
The aircraft started-off as a PR7 and was modified to PR9 configuration (retaining the original B2 nose). Serving with the RAE, it was employed on gust research and on a few photos, the tip tanks appear to be fitted on the actual tips of the extended PR9 wing. Some of my colleagues insist it's an optical illusion but I'm convinced that the tanks (pods actually, as they didn't carry fuel) are indeed attached to the extended wing tips.
Anyone know any other photos that prove/disprove this? And if they really are in this odd position, then why?