My Tamron had been on back order since 3-24-14 Canon mount. I was able to get out today for a short time . The attached pictures were shoot with a Canon 5DMarkIII. I used a monopod and the files have not been cropped or processed. I will try to get out tomorrow with my 7d. I think that I will need to use the monopod as this did seem heavy. I just had my 63rd birthday and that may be why.