So as I mentioned earlier, I got a new flash for macrophotography. It's pretty cool! Of course, the first thing I did was stick it on the camera and point it at something on my desk, in this case a stuffed animal. Here's the first shot:
As you can see, the eye reflects the twin tubes of the ring flash, and they're firing equally. One of the typical complaints about ring flashes is that the light they give is extremely flat. The Sigma allows you to adjust the power, so that one side fires more strongly than the other in order to create shadows. Here's an example:
Now the tube on the left is firing at 8x the power of the one on the right, and you can see that in the reflection. You can also see a little bit more of a natural-looking shadow effect in the fur right above the eye.