Taken with a Nikon D-70 and a Sigma 15mm Fisheye lens and two external DS 125 strobes set to 1/2 power.

Compared to my Nikkor 10.5mm fish eye lens, the advantage of the Sigma 15mm is that the principal subject better fills the frame and there is less back scatter in the corners. However, the 15mm doesn't seem to focus as close as the 10.5mm does i.e. I can focus down to subjects touching the lens on the 10.5mm lens whereas subjects need to be at least 2 inches away from the lens to focus the 15mm.

Tip: I get my best lighting results by keeping my strobes closer in than I do for normal wide angle and importantly, mounted about 6 inches to a foot behind the dome port. It turns out that this placement is needed to light very close subjects and it also works well for lighting farther out, true wide angle shots, by painting the central portion of the picture with light.

Photos by Peter Schulz