This is my first attempt at focus stacking. After reading a recent edition of Practical Photography (UK mag), I set the dandelion flower up against a black background and took six shots. The work was performed by CombineZP, a free program, and I painted out a few blemishes with Corel Paint Shop Pro X2. I reckon this technique could easily be incorporated into future DSLR's. Just select the start focus point (nearest to camera), and finish focus point (farthest from camera), push the shutter button, and the camera processes the (six?) shots together.
Regards