I was so happy today, my new lens arrived. I had ordered a Sigma 70-300mm APO lens from 47st Photo, I wanted it for a hiking trip this weekend. Anyway it arrived today and I take it out of the box, go to remove the covers and written on the cap in big letters "FOR NIKON". Nothing against Nikon, but I have a Canon. So I called up 47st Photo and though they will make it right I was hoping to have the lens by this weekend and they will not ship out the right one until they receive the Nikon one back (which is understandable). A shop about an hour and 15min south of me has a Tamron 70-300mm f/4-5.6 Di LD, for a little less money. Would you recommend getting it or wait for the Sigma? I have read the reviews on the Sigma and it seems like a great lens for the money so that is why I went with it. I have not been able to find much about the Tamron. I am not a pro, I just like to shoot for fun and play around in photoshop. Thanks you for listening and any advice.