A Miniature World
  A few months ago one of the photo magazines I subscribe to printed an article on how to produce 'planet' panoramics.  The idea is to produce a 360 degree panoramic image and turn it on itself to produce a round image that looks like a mini planet.     Bahrain International Circuit      It doesn't work with all subjects and it has to be a strong image to work properly so I decided to try this technique at the final three circuits of the 2012 FIA World Endurance Championship - Bahrain, Fuji and Shanghai.     The ones in Bahrain and Fuji worked well because I was using a D700 with a 17-35 f2.8 set at 17mm.  The one in Shanghai was taken on my Fuji X100 using the 35mm (equivalent) lens, which really wasn't wide enough.     The technique is fairly easy -    Take overlapping images in a 360 degree rotation.  It is easier on a level tripod but it can be achieved handheld with a little patience.  The problem comes when you join the ends, they have to match at the join.  St...