My first post here. Two panoramas with my favorite open source tools: OpenCamera app on an android phone, exposure brackets captured in raw, converted to tiff using ART, then exposure fused and panorama stitched in Hugin, missing corners filled in with the multiscale inpainting filter of G’Mic, and finally colours and tones adjusted again in ART.
@Terry There’s a hidden gem which took me a while to find: the DNGs contain also vignetting (or flat-field) correction data. At least ART can use that, perhaps RawTherapee and other sw also. In ART you just need to enable the correction in the “Raw” tab, under “Flat field correction”, check “Embedded in metadata”