I think audiophiles and photographers (professional and amateur) have much in common, and the overlap between the two groups is perhaps greater than between audiophiles and home theater fans. I have an interest in photography myself, and I know a good number of audiophiles, audio writers, and members of the audio industry that are of a similar bent. (With Doug Schneider of Soundstage! and Peter McGrath of Wilson Audio, I'm as likely to talk cameras as about audio equipment.)
Photo Service had many interesting products on display (I enjoyed the demo of the Wacom digital drawing tablet), the most popular being the setup of cameras and big lenses from Canon and Nikonsee photo above. This part of SSI 2013 was a resounding success.