Lightroom Virtual Copies: The Ultimate Guide
Briefly

Virtual Copies in Lightroom are not copies of the original RAW file but copies of the Develop settings, allowing experimentation without altering the original image.
Virtual Copies save space by creating new thumbnails rather than duplicating image files, enabling users to try multiple editing techniques with minimal impact on storage.
Creating a Virtual Copy in Lightroom can be done through Photo > Create Virtual Copy or by using keyboard shortcuts, offering flexibility in experimenting with various editing options.
Read at Digital Photography School
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