A great example of low light photography with a wide aperture lens. I used a Canon EF 50mm f/1.4 lens for this shot along with a Canon 7d camera. If you look closely you can see the hand blur from the slow 1/40sec shutter time and a bit of fill flash. All in all not too bad of a low light shot at a party.
Canon EF 50mm f/1.4 | Canon 7d | 1/40s at f/3.2