Reverse Lens Macro
An interesting technique I learned from a high school friend is the "reverse lens macro." Basically, it takes advantage of the fact that a lens works (i.e., focuses light) in both directions. This technique allows you to focus on a subject that is very close to the camera (within a few inches), closer than with a regularly-mounted lens. This can be used as an effective cheap macro solution. There are two main problems with this, which I will address: 1) Less light makes it to the camera sensor, and the camera has trouble reading exposure. 2) The depth of field becomes incredibly short, so it's hard to get enough of the picture in focus, and hard to get exactly what you want into focus. If you have a digital SLR camera, you can try this technique. It works best with a lens with a focal length of around 50mm. Put the camera in manual mode. This is necessary because of the difficulty in metering the light. Detach lens. As I mentioned before, it's tough to get cor...