I have just started a small photo business on the side, and I do some sport pictures. Some of these are during a game. My problem is when I take a action shot, my camera sometimes focus' on the background instead of the game. I have a Cannon Rebel XT with a sigma 28-300 lens. Any suggestions?
either focus quickly on the main subject and then compose and finally trigger the shutter ... OR focus manually. I personally switched off the automatic choice of focussing sensor... as the camera sometimes tends not to realise what the main subject is
Well if you get a better body you might have a spot focus feature. I now Nikon has it I'm not sure ab Canon.
I believe the rebel xt has the al servo focus mode which should be used when tracking a moving subject. Basically you keep following the subject and it should stay in focus for the most part. Worked wonders when I was shooting track and field, especially the long jump. Many more keepers because of it.