Jeff Cable's Blog: Comparing the new Canon EF 16-35mm f/4 USM IS lens to my older Canon EF 16-35mm f/2.8 II USM lens - Should I switch?
Photography Equipment Reviews
Photography Equipment Reviews
test: Sigma 12-24 vs Canon 16-35 L and 17-40 L: Canon SLR Lens Talk Forum: Digital Photography Review
Canon EF 16-35mm f/2.8 USM L II (full format) - Review / Test Report
Canon EF 17-40 mm f/4.0L USM review - Build quality
Long Term Review: Canon EF 17-40mm f/4 L - The Phoblographer
Canon EF 16-35mm f/4 IS L USM vs. EF 17-40mm f/4 L USM
Long Term Review: Canon EF 17-40mm f/4 L - The Phoblographer