Here are some photos from a wedding we invited. All we were equipped with was our trusty Sony NEX-7, a Metabones Speed Booster, and the Contax 50mm Planar - a gem. The Speed booster gave us an effective 55mm lens at f/1.2, necessary for this low light event.
The NEX was set to shoot jpeg only in black and white with contrast and sharpness at negative two. This made the post-processing much easier than usual with cropping as the only requirement.