Because the DNG (Digital Negative) format is open-source, Adobe still releases free DNG converters that can take raw files from modern cameras and convert them into DNG files. These converted files can then be opened in Lightroom 5.7.1. While this adds an extra step to the workflow, it allows photographers to continue using the perpetual license software on modern hardware indefinitely.
: It was the final preparation before Lightroom 6, which added features like HDR and Panorama Merge but eventually became the last version sold with a perpetual license. The Modern Quest for 5.7.1 Today, "Lightroom 5.7.1" is frequently searched by photography enthusiasts and users of older hardware (like Windows 7 or older Mac OS) who do not want a monthly subscription. The Download Hunt mise à jour lightroom 5.7.1