This series tests the Sigma 135mm f/1.8 DG HSM Art on the 45-megapixel Nikon D850 with a finely detailed distant landscape scene, where any lens weakness or field curvature pops out like a sore thumb.
New ground is broken here in textural detail; it leaves one wishing for more, because it sure looks like there is more to be had, if only the sensor had the resolving power. What impresses here at all apertures is the textural detail. With less sensors and lenses, the sagebrush flats and rocky hillsides would just turn to mush, or spurious detail—see the full-res images.
Images presented at up to full 45 megapixel resolution from the Nikon D850.
I highly recommend the about $1399 Sigma 135mm f/1.8 DG HSM Art.
Separately, I’ve started a page for the D850 with examples that are particularly fine in showing how much detail can be captured: