Hi there, I am new to the board but am really anxious to get more in depth into photography. It really is a passion that has always been here with me.. just very slowly developing. My primary subjects are dogs. I do a lot of K9 sporting events and competitions with my dogs and I find it extremely difficult to get good, clear, properly exposed action shots--both indoors and out. I am on here to ask everyone here what they would suggest for an action lens? What kind of settings do I use for my camera? Anyother tips and ideas? I have a Canon Rebel XTi. Thank you in advance!