OK, I have been looking for an all around lens. I have been taking my time because I wanted to see what else is out there. Now I am debating between these two lenses. Both are Canon L so picture quality will be great. Now with the 24-70 I will have advantages of shooting in low light and have a faster shutter speed but I won't be able to focus up to 105 like I would with the 24-105. This will be used for photojournalism which will include sports, band performances, etc..... I'm leaning towards the 24-70. Could I used a tele converter with this lens that way I would not have to make this choice?