Images advertising On the Edge 4, the photography expo brought to you by the good folks at Erotic Art Events, are heavy on the cheese and rife with cliché. But digging through the portfolios of the 26 participating photographers unearths real gems. Mr. iPhoneographyPorn, for example, shoots dramatic male and female bondage and even more hardcore porn with his trusty iPhone 4s, showing proper attention to lighting and composition. In short, they're actually good (if you like that sort of thing — and you'd better, if you plan to attend this event). Similarly low-tech, 25-year-old Sarah Elise Abramson snaps Polaroids of blissful nude and semi-nude models with a touch of innocence. The weekend-long event, which also includes corset and fetish fashion shows, offers photos with varying degrees of sophistication, from fine art to guy-with-camera snapshots, pleasing everyone from the erotica connoisseur to the dirty old man.