In most cases, I use ambient light to create my photographs but sometimes I have to use my external flash. My goal when using a flash in nature photography is to capture the image so it is not obvious to the viewer that a flash was used in the process. I had to use my flash because the wind was moving these flowers a tiny bit. The closer you are to a subject the more any movement will show up. Also, I had to set my lens to F22 so that I could get both flowers sharp. I set my focus manually one third of the way into the scene. Macro photography requires much more technical skill than most other kinds of outdoor photography. F22 at 1/30, ISO 3200, 105mm lens at 105mm