I rented one from Lens Rentals. Awesome lens, but heavy. I used it mostly outdoors. Interiors a little tricky with some distortion wide open. You can rent it from them for less than $200 for a week with shipping and insurance and try it out. I ended up getting the 16-35 4.
Thanks, I will post the color picture as well. It is mostly B&W. I thought that the little bit of color subtracted from the image. Let me know what you think.