This is a couple of shots that I took indoor at a local RC race Thursday night. It was the 1st time trying out the Tamron 70-200 len indoors that I just got. Hope this might help. I did have issues with focusing but I think it was more the camera a T3i then the len but not for sure.
[URL="[URL]http://[URL=http://s1317.photobucket.com/user/Denis_Currier/media/Kelderman%20Raceway/DPP_0102_zpsee77c73d.jpg.html]
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[URL="[URL]http://[URL=http://s1317.photobucket.com/user/Denis_Currier/media/Kelderman%20Raceway/DPP_0104_zps5cf86e79.jpg.html]
"][URL]http://[URL=http://s1317.photobucket.com/user/Denis_Currier/media/Kelderman%20Raceway/DPP_0104_zps5cf86e79.jpg.html]
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