I'm new to this sight so let me appologize if this is a repeat topic.
I am also a complete amateur photographer but am trying to learn the basics. I got into it with my Son's sports and really enjoy shooting all of his games. I have a 40d with 3 lenses, but the one I use most for sports is my new 100-400 f/4.5-5.6L which I shoot using a monopod.
I've been using mainly the "Sports" and "Portrait" settings until I really understand what I'm doing.... Anyway:
I recently shot a football game at night under lights and could not get a clean action shot without a ton of motion-blur. I've been doing some reading and found that the 40d will max out at 800 iso when in auto modes. I think I've figured out how to max out the iso (3200 I think) and then use shutter priority to try to get better shots but haven't tried it. I also read that it may be necessary to underexpose the shots and then use software to "brighten" them. Given the equipment that I have, does anyone think it will be possible to get good stop-action shots in this situation; or should I consider upgrading the camera / lens or both.
Thanks in advance, and sorry for being such a newb