This is simply a close up of a green and red maple leaf on a tree nearby. I love the contrast of the colors over the blurry green background and the shallow depth of field. This is another photo that makes a great desktop wallpaper on my computer.
Details:
Camera :: Canon EOS 5D Mark III
Lens Model :: Canon EF 100mm f/2.8 Macro
Exposure :: f/2.8 :: 1/1600th :: ISO 200