Taking pictures of my son and his team playing BB is what actually got me into photography and going from a P&S to a DSLR. I'm still a big-time rookie but really do enjoy taking pics and seeing the kid's reactions when you get a good one!

That being said, my main lens is the Canon 2.8 70-200 IS but I was thinking that the new Tamron 150-600 VC might be a good option too. I don't think I can afford to buy one but if you guys think the Tamron would be a good choice for baseball (and hopefully wildlife too), I might sell my Canon 100 Macro to help fund the purchase. I really like taking macro shots but with kids in Jr/Sr High school, I want to get the best pics of them that I can.

Right now I'm shooting a Canon 7D and it's been great but if it would be a better choice for me to upgrade my camera to a 7Dii or 6D instead or go to something totally different like the new Canon 100-400, I'd be very interested to hear your feedback.

I recently sold (to fund a Canon 500mm) my Tamron 150-600 lens. I can say that it is a great lens for the money but I would not recommend it for indoor shooting (too slow). Stick with the 70-200mm f2.8 and upgrade to the 7DII.

I shoot a lot of baseball so the 10 fps on that 7Dii would be really nice for hitting, pitching and the fast infield action! I figured the Tamron wouldn't be too hot in low light but how do you think it would do for the day games?

Why not get closer? There's no need for 500mm for shooting baseball, unless you're sitting in the stands eating a hot dog. Chat with the staff and get close to the field and you can shoot most of the infield game with a 180-300mm lens.

Given that you have the 70-200 2.8 already, I would say a Canon 1.4x teleconverter added to that lens will give you the reach you need, particularly on a crop-sensor (APS-C) camera.

Sorry, basketball (BB) on the brain.

The fps and fast focus lock (and high ISO) are where the 7Dii shines. Many sport photographers (i.e. amateur, kids sports) do not fill the frame and shoot tight on the action so I would definitely recommend the Tamron 150-600mm for baseball on bright days. If you are looking for an excuse to by a budget friendly super telephoto you really can't go wrong with the Tamron. But as stated above, adding a Canon 1.4x ii or iii (or even a Tamron 1.4x SP, $200 less) will get your 200mm to almost 450mm while only losing one f-stop (f4).

Good idea on a 1.4x teleconverter.....a lot cheaper than a new lens and would allow me to try out that new 7Dii. Thanks for the feedback!