As a photojournalist, I’m constantly presented with impossible lighting situations. Dark basketball gyms, dim living rooms, etc. I try, in most cases, to leave the strobe in my trunk. Adding artificial light, too me, takes the reality out of a documentary photograph. In recent years, the low light capability of high-end DSLR cameras has improved dramatically. But even cranking my ISO to 8000 didn’t give me the results I wanted in this photo of inline speed skaters. Pattison’s Roller Rink is a cave. Only minimal ambient light was available. Two get this effect I set my camera to 1/13 of a second for the shutter with 5.6 aperture at 3200 ISO. That gave me a normal exposure for the ambient light, but to freeze the action I set my strobe to rear-curtain shutter, which fires the camera shutter first, then at the end of the exposure the strobe triggers. This added the ghosting effect to the skaters. I also panned the action–where my camera matched the speed of the skaters as they rolled past. This effect made the background blur horizontal. I shot about 100 images and this one the best.