Macro Extension Tubes?

[TCimages]

Great example Ron. Here is an example of handheld with the 100mm macro

Another critical peice is lighting. Shooting up close creates very narrow depth of field (DOF) so unless you prefer narrow DOF, you will have to close down the aperture (bigger number) which will slow your shutter speeds so much that you will need a tripod or external lighting (flash). Extension Tubes exacerbate the lighting problem. Nate above mentioned this.

 

[TCimages]

Here is a great resource:

Extension Tubes for Macro Photos