These two images were taken using the Canon FD 85L lens (adapted to the Sony A7). The size of the aperture is key for this technique this lenses 71mm is hard to beat without gaining a lot of weight and size. The FD 85L is also very sharp!
Considering the filter thread is 72mm this is a very tidy lens. It's 40% lighter, 11% shorter and 20% thinner than the auto-focus version while also allowing a slightly close focus distance. When used for this technique it can create some great panoramas relatively easily.