Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: White Aspen Trunks (Sony A7R IV)
This series from f/1.4 to f/11 evaluates the Sigma FE 105mm f/1.4 DG HSM Art at medium-far distance. Sharpness and contrast, bokeh and color correction are all discussed.
Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: White Aspen Trunks
Ditto, but at closer Range:
Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: White Aspen Trunks, Closer
Includes image up to full camera resolution from f/1.4 through f/11, plus crops.
The Sigma FE 105mm f/1.4 DG HSM Art is a heck of a performer!

White Aspen Trunks
[low-res image for bot]
f1.4 @ 1/5000 sec electronic shutter, ISO 100; 2020-03-04 10:39:27
Sony A7R IV + Sigma FE 105mm f/1.4 DG HSM Art
ENV: Lee Vining Canyon, altitude 7300 ft / 2225 m, 55°F / 12°C
RAW: LACA corrected, vignetting corrected
Sony A7R IV + Sigma FE 105mm f/1.4 DG HSM Art
ENV: Lee Vining Canyon, altitude 7300 ft / 2225 m, 55°F / 12°C
RAW: LACA corrected, vignetting corrected
[low-res image for bot]