I was right down in the corner today watching Wasps beat Harlequins 24-18. To be honest, my lens is too slow for the high shutter speed you really need for rugby. Hence, even though there was a try right in the corner where I was sitting, the shots were blurred because I should have been shooting at something like 1/1000 sec instead of 1/250. That meant needing to use a high ISO later in the game when I caught the action a little better. No wonder all the pros use such expensive lenses. More photos here.
