The new panorama camera in iOS 6 is pretty handy when you want to take a big, wide picture, but it seems like it only allows you to go one direction. However, as Macgasm points out, you can switch the panorama direction with a tap.
FIrst off, load up you camera app and switch it over to panorama (Options > Panorama). The arrow wants you to take the picture moving from left to right. But if you tap the arrow, it flips, and you can take pictures from right to left. Panorama mode is great, and now you don't have to situate yourself to get the perfect picture.