Sigma 14mm f/1.8 DG HSM Art Aperture Series: Slush Ice on Shallow Pond
See my Nikon wish list and get Sigma 14mm f/1.8 DG HSM Art at B&H Photo.
This series tests performance using a near-far scene with focus at relatively close range. This facilitates seeing how the lens performance in all sorts of ways: sharpness across the field, color correction in front of and behind the zone of focus, near-to-far real depth of field, fsfocus shift, etc.
Sigma 14mm f/1.8 DG HSM Art Aperture Series: Slush Ice on Shallow Pond
Includes images up to full camera resolution, and several crops, all from f/1.8 through f/11.
The performance seen here is impressive for a 14mm lens.