[UPDATED] We were curious to see how the new Canon 11-24 F4 performed on a high resolution sensor, so we've updated our gallery with some landscapes and aperture progressions taken on a 36MP Sony a7R with a Metabones adapter. Though performance at extremes of the frame may not be representative of that on a native body, the 11-24 doesn't disappoint. Have a look at the new shots on the 3rd page of our gallery.

Canon's new EF 11-24mm F4 L wideangle zoom lens is Canon's widest ever rectilinear zoom by some margin, and might even challenge Nikon's venerable 14-24mm F2.8 as the tool of choice for landscape, property and architectural photographers. 

The lens is constructed from 16 elements in 11 groups. Four of those elements are aspherical, one is of ultra low-dispersion glass and another is 'super' ultra low-dispersion. External elements are fluorine coated, while inside surfaces have sub-wavelength structure coatings to minimize internal reflections that cause flare and ghosting. If all of this makes your heart race you'll know exactly how we felt when a reviewable sample arrived in our office last week.