LeeROI hey I have Canon 20D and a 50D. #1 was captured with the 50D and my favorite lens-a Sigma 17-70mm macro. I use this lens more than any in my bag and not only for cannabis pix...it remains on my camera most of the time. The T2I would do you good but I'd recomend a better lense than the Tamron. I use a set of Kenko extension tubes with my Sigma to get in closer and other lenses to get pix like #3 . Hope this helps...looking forward to your pixels..DD