Take a look at these glasswing butterflies. You will notice that the butterfly is focused than the background. See the distribution of colors, from right here you can see that the camera feature used is the macro mode.

The macro photography can be compared to looking on a subject through the magnifying glass. On the other hand, if we are talking about macro mode on a digital camera, we are referring to the possibility to get a very close shot on our subject. In using the macro mode, there are few things to consider like the focus which is very critical because you’re goal is to get close to your subject. In this case, the subject and the camera should be parallel to each other and a small aperture should be used. The shutter speed would be somewhat slow so you may need your tripod. In-camera flash should be avoided because its light is usually too harsh and will cause overexposure. You may sort to using some form of natural lightning.