Another variant of reality pornography consists of normal couples that are filmed by professionals, in which case the only obvious distinction from amateur pornography is the higher quality of production, filming and editing. The work of Bruce Seven has been called reality porn, due to his lack of using scripts and asking his performers to act naturally in their own character. These scenes may either have the cameraman directly engaging in sex or merely filming others having sex. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. BDSM communities generally welcome anyone with a non-normative 3d hentai streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. A female dominant in a master/slave relationship is often termed a Mistress, not to be confused with the colloquial usage of mistress as a kept sexual partner without a similarly formalized power relationship. Reflective of its views on sexuality and culture, Japanese pornography delves into a wide spectrum of heterosexual, homosexual, and transgender sexual acts in addition to unique fetishes and philias. As of 2013, little analysis of this paraphilia has been videos gays reported in medical literature. Films with risqué content commenced to be produced soon after the invention of the motion picture in the 1880s. Actual upskirt or downblouse shots may violate privacy laws in some countries. In modern BDSM vernacular, the queening stool allows open access to the crotch while seated. Facial cum shots are currently regularly portrayed in pornographic films and videos, often as a way to close a scene. It spawned numerous sequels, mature milfs several of which won adult film awards. Most soft crush fetishists avoid being placed under the same label as hard crush fetishists, believing that crush films with larger animals give the entire group a bad label. Both forms of pornography generally contains nudity.