Sigma 150-600 Contemporary Lens Review

I have written a review of the Sigma 150-600 Contemporary lens on my website.  In summary I think it's a very nice walk around lens, especially for the price.  It works well with both the Canon 7D2 and 5D3, you get a bit of vignetting with full frame cameras but I prefer the image quality when used with the 5D3.  You can buy it for Nikon bodies as well.   I find it is not as sharp at 600mm so I routinely back it off to 560mm.  To be able to walk around with a lens which weighs only 4.3 pounds but has such a huge focal range is great.  The lens retails for less than $1,100 so it's a very good value for the cost.  To read the full review with more images see LENS REVIEW
The image is a Large-billed Tern photographed in the Pantanal in Brazil with this lens
Canon 7D2 150-600 at 331mm 1/2000 F8, iso 400