Hello everyone, although I've been a member here for quite a few years and I haven't posted in a long time, I am still VERY new to photography.
I was fortunate enough to pick up a used Canon 5D MKIII. I've been trying to photograph my kids sporting events but I seem to be having a hard time focusing. Many of the shots I took focused on the background rather than the kids I was trying to shoot. I have a 24-70 2.8L and a 70-200 2.8L that I have tried using. Does anyone have any advice how to assist me with the focusing? As I mentioned, I bought the camera used and I'm trying to rule out user error before I think the camera is not working properly. The camera looks good and seems to work properly, it only has 41,000 shutter activations. Any help is appreciated!