Sharing a Mac with another photographer is common. Partners, housemates, studio colleagues and family members often share one powerful Mac, with one copy of Photomator, one set of presets and one photo library that slowly becomes a mix of two people’s work. Without a clear system, photos get overwritten, presets get changed, exports go to the wrong folder, and a calm collaboration turns into a quiet argument about whose photos are whose.
This guide describes a fair, practical workflow for two photographers sharing one Mac and Photomator. It covers separate libraries, shared presets, naming, backups and communication, so both photographers can work quickly, keep their own style, and trust that their work is safe.
Separate libraries, shared Mac
The first rule is separation. Each photographer should have a separate library, folder or catalogue, clearly named, so photos are never mixed. In Photomator, that means separate folders on the Mac, with a clear structure such as Photographer A and Photographer B, each with their own imports, edits and exports. Do not work in the same folder at the same time, and do not edit the other person’s originals without agreement.
Use separate user accounts on the Mac where possible. Separate macOS accounts give each photographer their own Photomator settings, presets and photo library, with far less risk of accidental changes. If separate accounts are not practical, use separate folders and a clear naming system, and agree that presets and settings are not changed without discussion. That agreement, written down in a short note, prevents most conflicts.
Presets, styles and consistency
Two photographers rarely have the same style. One may prefer warm, contrasty edits, the other cool, soft edits. Shared presets can help for joint projects, but personal presets should stay personal. Keep a shared folder for joint presets, clearly named, and a personal folder for each photographer’s own presets. Do not overwrite a shared preset without telling the other person, and keep a backup of presets that both people rely on.
For joint work, such as a wedding, an event or a shared client, agree on a starting point before editing. Edit one representative photo together, save that as a joint preset, and use it as a foundation for the set. Each photographer can then make individual adjustments for their own photos, while the overall set stays consistent. That balance, shared foundation and personal finishing, keeps joint work coherent without forcing both photographers into the same style.
Naming, folders and exports
Naming is the difference between a shared Mac that works and one that does not. Use a consistent naming system for folders and files, with the photographer’s initials, the date and a short description. For example, a folder named 2026-11-02-A-Wedding is clear to both people, while a folder named Photos is not. Exports should go to separate folders, with the same naming, so neither photographer has to hunt for their finished work.
Keep exports separate from originals. Originals should stay in their own folders, untouched, with edits saved as copies or as non-destructive edits in Photomator where possible. That way, either photographer can return to an original if an edit goes wrong, without affecting the other person’s work.
Backups and storage
A shared Mac needs a clear backup plan, because two people’s work is at risk if the Mac fails. Use an external drive or cloud backup that covers both libraries, and agree who is responsible for checking backups. Each photographer should also keep a personal backup of their most important work, separate from the shared backup, so a shared drive failure does not lose everything.
Storage should be managed fairly. Agree on how much space each photographer can use, and review storage regularly. Large photo libraries grow quickly, and a Mac that runs out of space will slow down both photographers. Archive finished projects to an external drive, with clear labels, and keep only current work on the Mac itself.
Communication and a fair rota
Most shared-Mac problems are communication problems, not technical ones. Agree on a rota for heavy editing sessions, especially before deadlines, so both photographers can plan. Use a shared calendar or a simple note on the Mac to book editing time. Respect the rota, and leave the Mac tidy after a session, with files saved, exports in the right folder, and Photomator closed or left in a clean state.
When you are reading the Photomator blog, you will see the same principle in many shared workflows. A short, written agreement, reviewed occasionally, prevents most arguments. It does not need to be formal, but it should cover libraries, presets, naming, backups and editing time, so both photographers know where they stand.
Common shared-Mac mistakes
The most common mistake is mixing libraries, which makes photos hard to find and easy to overwrite. Another is changing shared presets without telling the other person, which affects their work. A third is neglecting backups, which puts both photographers at risk. A fourth is working on the same photo at the same time, which can lead to lost edits. Separate libraries, clear naming, shared presets with care, and a fair rota will avoid most of these problems.
Frequently asked questions
Can two photographers share one copy of Photomator on a Mac?
Yes, with separate libraries and a clear agreement on presets, naming and backups. Separate macOS user accounts give the cleanest separation, while separate folders and a written agreement work well where separate accounts are not practical.
How do we keep our photo libraries separate?
Use separate, clearly named folders or libraries for each photographer, with initials and dates in folder names. Do not work in the same folder at the same time, and do not edit the other person’s originals without agreement.
Should we share presets?
Share presets only for joint projects, in a clearly named shared folder, and keep personal presets separate. Do not overwrite a shared preset without telling the other photographer, and keep a backup of presets you both rely on.
How do we avoid overwriting each other’s edits?
Keep originals untouched, save edits as copies or non-destructive edits, and use separate export folders. Communicate before editing a shared project, and do not work on the same photo at the same time.
What backup plan suits two photographers sharing a Mac?
Use a shared backup that covers both libraries, plus a personal backup for each photographer’s most important work. Check backups regularly, archive finished projects to an external drive, and agree who is responsible for backup checks.