Bottom at center
This area is well in front of the zone of focus, and therefore minor deviations in focus and/or field curvature affect the results greatly. It is best not to conclude too much here other than to observe what happens as the lenses are stopped down.
The 16-35 is showing very nice contrast even at f/4, crisping up nicely at f/5.6, and it takes until f/11 for the 14-24 to catch up.
Aperture f/16 brings a grayish dullness, a loss of brilliance, as expected from diffraction.
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