By 1868 Bierstadt's Yosemite paintings were, for the most part, studio productions rather than records made on site. He had first visited the valley in 1863; paintings dated several years later, like Sunset in the Yosemite Valley, were typically built from a stock of field sketches and photographs rather than a fresh visit, sometimes while Bierstadt himself was in Europe^[1]. This was a deliberate working method, not an improvisation. Bierstadt and his brothers had links to photography as a trade, and Bierstadt drew directly on photographic material, including work by Carleton Watkins and Eadweard Muybridge, both of whom photographed Yosemite and the Sierra Nevada in the same period^[2]. A painting made this way carries a different relationship to its subject than a field sketch: it is a composed, retrospective image, built to satisfy an exhibition or a buyer, rather than a record of a specific moment of observation.

Much of Bierstadt's reputation rests on paintings built around a high, clear sun breaking through cloud onto a lit foreground, a formula that reads almost as a signature. Sunset in the Yosemite Valley instead uses low, warm evening light, a quieter register that suits a composition assembled from memory and photographic reference rather than direct observation of a single moment^[1]. The choice of sunset rather than midday sun does not change Bierstadt's underlying structure, a detailed foreground set against a dramatic sky, but it does change the mood, trading the bright light of his best-known Rocky Mountain and Yosemite canvases for something quieter. The painting is held at the Haggin Museum in Stockton, California.