All photos
Martin Leitgeb
Snow-capped mountains reflected in the calm water of a lake at low light
Photo by Martin Leitgeb on Unsplash · Original
Drag the seam — left of it is the SDR base (dynamic-range-limit: standard), right of it is the same JPEG decoded as an Ultra HDR gain map. Both use local long-edge-capped JPEGs so resolution and codec match exactly.