Using your flash when doing macro photography is the best way to be able to use small apertures and get more depth of field. Even though you can use the onboard flash you’ll have much better results with off camera flash. Being able to vary the lighting angle will allow you to create more dramatic photos.

With a Point & Shoot camera you’re pretty much stuck with using the builtin flash. The best thing I can suggest is to use 1-2 layers of tissue over the flash. This will reduce and soften the light and produce better macro photos.

Digital SLR owners can use a cord or wireless (if your camera supports it) for off camera flash. You’ll then have the ability to position the flash where ever you like. Create top lighting, side lighting or back lighting. The choice is yours. The nicest part of this setup is the camera will control the flash output. Perfect exposures are almost guaranteed.

Look at these two photos. Both were shot outside at 6PM on a hazy day. One has the flash coming from top left; the other from the side. Notice the difference in the shadows, apparent texture and the darkness of the background. See what a small change in the light angle will do?

Do yourself a favor and get the appropriate equipment for off camera flash. Your macro photos will change dramatically.