The 17-40mm f/4L lens is cheaper than this lens, but lacks IS and also suffers from poor corner performance and vignetting

I went from the 16-35 2.8 II because I wanted better corner sharpness

The overall images are incredibly sharp in the centers as well as the corners

The overall images are incredibly sharp in the centers as well as the corners

Sharp corner to corner and very light weight.

The light resolution and sharper corners are noticeably

The weaknesses of the lens:-Soft small corners even stopped down to f/8

The corners were very good when compared to my 24-70

those two were leaps and bounds better in image quality than the version 1 copies, and this 16-35mm falls in that same category: huge leap upward for sharp corners, great resolution, awesome images

This lens is sharp corner to corner!

The corners at f/4 are so nice

In reading around on the Internet the different reviews for the 16-35mm f/2.8L II USM released in 2007, I saw that it had the potential of having slightly mushy corners

If you zoom in, you can see that there are still some SLIGHT issues, however, the corners are much better than when compared to the 17-

The biggest downside of the old 17-40 was the corners

The weaknesses of the lens:-Soft small corners even stopped down to f/8