Organization
An index, not a filing cabinet
A folder forces a single arrangement on you: an image lives in exactly one place. A photo catalog is a description database. For each image it records where the file sits, what it depicts, what it belongs to, and what has been done with it — without ever needing to move it.
The practical consequence is immediate: one photograph can belong to a project, three thematic collections, and a series, be rated, tagged, and found through any of those angles. A folder structure cannot do that without duplicating files.
What a catalog actually holds
- A pointer to the file, not the file itself.
- Technical metadata read at import: body, lens, exposure, capture date, colour space.
- Descriptive metadata you add: caption, keywords, location, people, rights.
- Curation decisions: ratings, picks, rejects, versions, RAW+JPEG pairing.
- Memberships: projects, collections, series.
- A checksum of the file, so you can later verify it hasn’t changed.
The trap: when the catalog becomes the only record
This is the most expensive mistake, and an easy one to make. If your keywords, ratings, and captions exist only inside your software’s database, then your description work is exactly as robust as that database file — and as your ability to open the version of the software that can read it.
Two habits prevent it: write metadata also into the files or their sidecars, and be able to export the full inventory in a format readable without the software.
Catalog, DAM, photo library
The three terms overlap heavily. In common usage: a photo library is the holdings themselves; a catalog is the index describing them; a DAM is a broader system adding roles, approval workflows, and distribution. For a solo photographer or a small studio, the DAM / catalog distinction is more sales vocabulary than a difference in kind.
In practice
- Pick a tool that describes files where they are, without imposing its own folder tree.
- Check how it writes your metadata: into the file, into a sidecar, or only into its database.
- Test a full inventory export before investing months of data entry.
- Make sure an image can belong to several sets without being duplicated.
Obscura Flow catalogs without moving originals, preserves the metadata blocks read at import, and exports a flat inventory as CSV — the catalog stays an index, not a lock-in.