I need advice on the best lens to take photos of track & fileld and baseball. I currently have a 7D along with a 70-200 IS 2.8 version 1.


My choices are the 100-400 zoom, new 75-300 L zoom, or I also was considering trading in the version 1 70-200 for a version 2 70-200 with extender .


Not sure wihich option woudl yield the best quality pictures. Thank you for your ideas.


MrT