(Click to Enlarge)
An end-on view of a Venus flytrap. The spiky things in the center aren’t the trap’s teeth — they are tiny trigger-hairs within the trap, thinner than a human hair. For the trap to close, at least two of these hairs must be touched in succession. I took this shot with a reversed 28 mm lens, which is a relatively inexpensive technique for shooting up close. A 28mm is a wide-angle lens, which many people already own. For about 17 bucks, I bought a reversing ring, which screws onto the front of the lens like a filter, and then allows the lens to be mounted on the camera backward. Doing this means you lose all electronic control over the lens, but since autofocus is of limited value with macro shooting, it’s not a big handicap. Plus, the level of magnification is really impressive.