SyncGallery

EXIF has three primary date fields: DateTimeOriginal, DateTimeDigitized, and DateTime - the photo's capture time, digitization time, and last edit time. None are required to be present. exiftool.org/TagNames/EXIF.…

The 3-2-1 backup rule most of the internet quotes comes from a 2005 photography book - Peter Krogh's The DAM Book. Three copies, two different media, one off-site. Written for photographers protecting RAW archives. The industry adopted it later. thedambook.com

Why RAW editing tools keep edits in .xmp sidecars: the RAW stays untouched, and your edit settings and metadata (keywords, ratings) live in a separate XMP file. Back up the RAWs without the sidecars, and your edits are gone. helpx.adobe.com/lightroom-clas…

Google Photos ended its unlimited 'high quality' tier on June 1, 2021. Pre-existing uploads were grandfathered; everything since counts against your Google One quota. Almost five years later, it's still driving migration decisions. blog.google/products/photo…