Fibonacci pattern in one of our Echinaceas. Although this macro and the next are nothing special they are much better pictures than I could get with my new Nikon D90, with an old but good Vivitar 55mm macro lens. (The 18-200mm Nikon zoom is practically hopeless for real macros shots but does okay for moderate close-ups.) The D90 has many strengths but unless one is willing and able to spend a lot of money for special lenses etcetera I think most people can get much better results for a tiny fraction of the cost with an upper end point-and-shoot digital camera, such as the Canon PowerShot SX10IS or Nikon P90. Or even a much cheaper one, like the PowerShot SX110IS that I used for these two pictures. My D90 is better for non macro pictures, from wide angle to slight telephoto (6X) and for challening situations like low light and sports (and other moving subjects).
This picture shows the pattern well enough but, alas, the detail breaks down somewhat in the center when viewed in original size.