This will probably be a noob question but here it goes. I've been using my Tamron 28-300 Di with my XTi since December. It takes decent pictures, happy with the quality, speed, etc. What I would really like to be able to do is get the real close up of my son's playing baseball, lacrosse etc. As close as I can get with the Di just seems not close enough. Now that I've bored you with this whats my best combination to get even closer. Keep my Tamron and add a teleconverter. Invest in a 75-300IS and a teleconverter, buy an ebay Pheniox 480-800 manual and experiment. Just need some directions from experienced users. I don't really want to spend 800.00 1000.00 and not get the closeness I'am looking for.


