Sigma UK has launched a 'Spirit of the Games' photographic competition, with the chance to win an SD1 Merrill SLR with 17-50mm F2.8 lens, or a DP2 Merrill large-sensor compact. Running from the start of the Olympic Games on the 28th July to the 31st August, photographers are invited to submit up to five of their images capturing the Spirit of the Games. The overall winner will be selected by Sigma's one judges, while 20 runners-up will be entered into a publicly-judged Facebook competition to win the DP2 Merrill.

Click here to go to Sigma UK's 'Spirit of the Games' competition page, for more details and how to enter.