An important thing to know going into the documentary being promoted as "James Franco's Kink" is that it's actually directed by his frequent cinematographer Christina Voros, and producer Franco is never a presence onscreen like he was in the similarly themed Interior. Leather Bar. Voros' much more traditional documentary Kink is about the goings-on in San Francisco's Armory building, home for the past several years to the Kink.com family of websites. Along with a great deal of explicit footage from the porn shoots themselves, there are interviews with both producers and models alike, with an emphasis on issues of safety, consent, how getting paid can influence consent, and why a given individual would want to be on either side of the camera for this sort of thing. It's a decent BDSM 101, but the mildly wasted opportunity of Kink is that so much screen time is given over to the actual shoots, which are readily available elsewhere. Even with the bonus of witnessing the often tender interaction between the model and director, it's ultimately not as interesting as the too-brief insights into running the business, such as a meeting in which the staff puzzles over why the revenues from FuckingMachines.com have dropped in recent months. And why did FuckingMachines.com's business drop off? Kink isn't telling.