I'm seriously thinking of getting this lens. How does the build quality compare to the 17-40L or 70-200L? All I've owned was those two and the 50mm 1.8 which felt like a toy. Also, can I see some 100% crops?
It sits inbetween the L glass and the 50 1.8. The mount is metal and the body has some weight to it but it is not L build quality. Bear in mind though you are not paying L prices.
The optics truly are stunning though, this is the lens that has made me move to all prime lenses. Selling my Tamron and replacing it with a UWA and a 50mm 1.4.











