Originally posted by lesmore49 BTW how did you like your Sigma 150-500 ?
I liked it quite a bit. I had previously owned the 170-500mm and I found that image quality of that lens was quite decent...pretty much in line with the various consumer 300mm zoom lenses I had owned. And then when I got the 150-500mm I was pleased to find that it was an all-around better lens. Extremely solid construction and very nice image quality for the price. Noticeably sharper at 500mm than the 170-500mm.
I had a lot of fun with the 500mm focal length, but I didn't need it for my photography and the lens I really wanted was the Sigma 100-300mm f4, so I sold the 150-500mm for a nice profit and last I heard the new owner was enjoying it very much and was thrilled by the image quality compared to their old 500mm solution. For the money, I don't think you can do any better than the 150-500mm.