The 14-24 is already performing well at f/2.8, albeit with a somewhat low contrast and not quite crisp results. At f/4, it perks up very nicely, with some small gains to f/5.6, where it peaks, maintaining to f/8. A very faint loss of micro contrast occurs to f/11, worsening to f/16, both effects inevitable from diffraction.
The 16-35 is soft and slightly smeared at f/4, improving nicely at f/5.6, but it does not match the fine detail of the 14-24, and it retains the softness differential even at f/8 and f/11; it never achieves the crispness of the 14-24.
Aperture f/16 brings a grayish dullness, a loss of brilliance, as expected from diffraction.
Article continues for subscribers...
If you’re already a subscriber, CLICK HERE TO LOG IN
diglloyd Advanced Photography includes hundreds of pages of exclusive coverage and high resolution, Retina-grade example pictures detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare. Also included is a wealth of in-context technique and workflow insight. Since 2006, diglloyd Advanced Photography is the authoritative review and on-line reference for discerning Canon and Nikon shooters. Subscriptions cost $ per year.