From Reddit/r/photography
–]optimus_maximus 2 points 3 days ago Hard light is great for that look, but don't forget that styling is HUGE for that type of shoot. For this engagement shoot in downtown Los Angeles, we used slower shutter speeds to create that old film in low-light look (since they were really limited to low ISOs). It knocked back the photos by a couple decades.
http://www.judytran.com/2012/05/love-on-hope-street-a-downtown-los-angeles-engagement-shoot-2/