Sigma FE 85mm f/1.4 DG DN Art Aperture Series: Frog On Table
This series evaluates sharpness across the frame along with focus shift at a distance of approximately six feet / two meters. The results are especially instructive and rather disappointing.
Sigma FE 85mm f/1.4 DG DN Art Aperture Series: Frog On Table
Includes images from f/1.4 through f/8 plus crops.