Biological anthropologist Helen B. Women oriented pornography is sometimes referred to as sex positive pornography. There is, however, no third party lesbian hentai camera work involved. Compensating elements of the total dominance and submission are care and devotion complementing one another, thus facilitating stable relationships. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Because the viewing of such films carried a social stigma, they were viewed at brothels, adult movie theaters, stag parties, at home, in private clubs and also at night cinemas. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. In POV porn, the shooting style is generally similar to gonzo pornography, with the person receiving sexual gratification holding the camera him or herself—aiming it down at the actress or actor who is performing the sex act. Group sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. Pornographic films are typically categorized as either softcore or hardcore lesbian milfs pornography. Voyeur pornography may also include shots of topless women gay twinks on topless beaches who are unaware of the cameras but may legally be photographed due to the public setting. Pornography is often distinguished from erotica, which consists of the portrayal of sexuality with high-art aspirations, focusing also on feelings and emotions, while pornography involves the depiction of acts in a sensational manner, with the entire focus on the physical act, so as to arouse quick intense reactions. The act may be carried out face to face, or head to tail, with the woman recommended to be on top if she has smaller breasts. Additionally, the buttocks give an indication of the shape and size of the pelvis, which impacts reproductive capability.