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Getting Started / Photo Preservation

Start with a few photos.
Leave a lasting collection.

Create a Photo Library from scratch, one manageable step at a time. We’ll build the beginnings of the demo library you’ve seen on the homepage.

Follow the real app from an empty folder to the first five-photo Group. Learn where your files go, how to preserve what you know, and how to leave the collection understandable beyond Continuum.

25 app screenshots5 practice photosOne complete first Group
Start Here ↓

STEP 01

Start with one small collection.

You do not need to organize every photograph before starting. Pick one packet of prints, one album, or one small set of digital images. Finish that first Group, learn what works, and repeat.

We’ll rebuild The Lincoln family album, the first five-photo Group in the demo library shown on the homepage. The screenshots show a fresh library being built, not a tour of an already finished collection. Your new Photo IDs will be different; that is expected.

Build along with the screenshots

Download the practice kit and unzip it. It contains the same five image files, readable source notes, and an optional empty library for people who already have Continuum configured.

Download the Practice Kit

5 photos · ZIP, 26.4 MB · No finished Group records to skip ahead.

Read the Photo Source Notes ↗

Keep Lincoln Photo Files outside the Photo Library you are about to create. It is your input folder. Continuum will copy the selected images into their new Group.

Photo Library

The main folder containing the whole collection.

Group

A folder for photos you choose to keep together.

Catalog

A readable text record of the Group and its Photos.

For your own photosHave the digital image files ready, or create an empty Group now and add scans later. Continuum organizes files you already have; use your scanner’s software or a scanning service to make the scans. Keep your prints and negatives in the physical arrangement that works for you.

STEP 02

Download and open Continuum.

Use the Windows or macOS download on the homepage. The current Mac download is for Apple Silicon.

Windows

Extract the ZIP using Extract All. Open the extracted continuum folder and launch continuum.exe. Keep the whole extracted folder together, including _internal.

macOS

Unzip the download. Move Continuum Photos.app to Applications, then open it. The app and your Photo Library are separate: your photos do not belong inside the app bundle.

Choose a lasting home for your library: a dedicated folder on a drive you can write to, with enough room for your photos and a separate backup. For a first attempt, a local folder is straightforward. If you use an external drive or NAS, connect it before opening the library.

The screenshots use the app’s light appearance on Windows. Folder pickers and operating-system controls look different on a Mac; the Group and Photo record fields follow the same structure.

The first launch asks where the Photo Library should live.
SCREEN 01 The first launch asks where the Photo Library should live. Click to enlarge ↗

STEP 03

Give your Photo Library a home.

  1. In your file browser, create a dedicated empty folder. For this walkthrough, call it Continuum Demo Library. Put it beside the practice input folder, not inside it.
  2. In the welcome message, choose OK. In the folder picker, select that new empty folder itself.
  3. Read Set this up as a library? and check the folder name. Choose Yes to initialize it.
  4. Wait for the main window to finish loading. A new library shows 0 Groups and 0 Photos. Continuum remembers this library for the next launch.
Confirm the empty folder before Continuum initializes it.
SCREEN 02 Confirm the empty folder before Continuum initializes it. Click to enlarge ↗
What was created?The shared continuum.photos folder holds the schema and other library-wide information. You do not need to create Catalog files or type any TOML yourself.
A clean starting point: no Groups and no Photos yet.
SCREEN 03 A clean starting point: no Groups and no Photos yet. Click to enlarge ↗
Already opened a library or the finished demo?

The welcome flow is for first-time setup. Settings → Add existing library… expects an initialized Continuum library, so it will reject a completely empty folder.

To follow along without touching your existing collection, use Empty Practice Library from the practice kit. It contains only the schema, with no Groups or Photos. You may rename that folder before opening it. Choose Settings from the view menu, choose Add existing library…, select that folder, then Save. Continue with the next step.

Select the library folder containing continuum.photos, not the shared folder itself and not the outer Continuum Getting Started download folder.

STEP 04

Create the first Group.

In Groups, click the green + beside the Group count at the top of the left panel. This is different from the + above the photo thumbnails, which adds Photos to an existing Group.

For the Lincoln collection, fill in the following. This is an assembled historical collection: its Group dates describe the collection’s range, not a surviving developer stamp.

FieldEnter for this walkthrough
MediumPRT_HARDCOPY — Hardcopy Prints.
StatusLeave PLANNED.
Earliest Date1860
Latest Date1865
NotesDemonstration collection. Physical prints and their storage locations are simulated.

Leave Photo Owner, Size, Inscription, and Tasks empty for now. Read the green preview, then choose Create Group. In an empty library, it assigns PRT_HARDCOPY-0001 and creates a date-prefixed folder. Numbers are assigned by the app.

Choose the medium and date range, then review the folder Continuum will create.
SCREEN 04 Choose the medium and date range, then review the folder Continuum will create. Click to enlarge ↗
What do the other Group fields mean?
  • Medium: Choose the original material. The options cover 35mm, 110, and disc negatives; hardcopy prints; instant photos; and digital originals. A JPEG scan of a print still belongs to Hardcopy Prints. Choose carefully: medium forms part of the Group’s identity.
  • Status: Planned, Scanning, Digitized, or Archived records your progress. You can update it later.
  • Photo Owner: Whose packet or collection it was.
  • Size: A default print size, such as 4x6. Leave it blank until you have print records and know their dimensions.
  • Negatives Custody: Used for negative-based Groups. Record what is actually accounted for; it does not apply to this hardcopy example.
  • Inscription: Copy original writing exactly. Put your interpretation in Notes.
  • Tasks: Work still to do, one task per line. For example, “Ask about the date” or “Measure the prints.”

For uncertain dates you can use a year, a year and month, or unknown digits: 1948, 1948-07, or 194X-XX-XX. You do not have to invent a day. A blank Latest Date in the New Group dialog uses the Earliest Date.

The first Group exists. Its Photo area is still empty.
SCREEN 05 The first Group exists. Its Photo area is still empty. Click to enlarge ↗

STEP 05

Bring in the five Photos.

  1. Select the new Group in the left panel. Click the green + beside the Photo count above the empty contact sheet.
  2. Choose the five images in Lincoln Photo Files, or select that folder. Do not select the source-notes document or the finished demo Catalog.
  3. In Add Photos, review the checked entries and their new filenames. Uncheck anything you do not want to add. The numbered practice filenames keep the five pictures in the intended order.
  4. Leave Delete original files after import unchecked. This walkthrough copies the images and keeps the input files.
  5. Choose Add Photos and wait for the import to finish. Open a thumbnail to confirm that the expected photograph is there.
Review every checked file and keep the original input copies.
SCREEN 06 Review every checked file and keep the original input copies. Click to enlarge ↗

Continuum creates a Photo record for each imported image, assigns its sequence and permanent Photo ID, and gives the copied image a matching filename. Importing into this Planned Group changes its status to Digitized. The Photos exist now; describing and filing their originals is still work to do.

All five images are now in the Group, before names and source details are added.
SCREEN 07 All five images are now in the Group, before names and source details are added. Click to enlarge ↗
Adding more laterAdd Photos appends new records to the Group. Selecting a folder checks its immediate image files, not every nested folder. Importing the same picture again can create another Photo record; this is not the way to fill an existing Pending record. Review the Group before repeating an import.
My photo files do not appear

Make sure you extracted the ZIP and are choosing actual image files. Check the recognized extensions under Settings → File recognition. JPEG, TIFF, and PNG are supported; HEIC/HEIF is not supported by this version. Keep original files when preparing compatible copies.

STEP 06

Give the Group its shared story.

  1. With the Group selected, choose Edit Record. The editor’s left column has Group and Photo sections, each with its own Subject subsection.
  2. Choose Subject under Group. Enter The Lincoln family album in Event.
  3. In Notes, enter: “The Lincoln family album. See each photo record for its caption, creator, date evidence and source.” Leave shared Place and taken-dates blank: these photos do not all have the same confirmed place or day.
  4. Choose Save. You can reopen the editor and add more later.
Group → Subject holds details shared across the collection.
SCREEN 08 Group → Subject holds details shared across the collection. Click to enlarge ↗
Two kinds of datesThe main Group dates describe the packet or collection. Subject dates describe when a photo was taken. Keep that distinction even when the two happen to be the same.

Shared subject fields are useful defaults. An individual Photo can have a more specific place, occasion, or date. Avoid filling the Group with a precise date that is only true of one picture.

STEP 07

Describe one Photo at a time.

Select Photo 001, the seated Lincoln portrait. Choose Edit Record. When a Photo is selected, the editor opens on its Photo section; the Group fields remain available above it.

The import has already set Scan to PRESENT and Scan Source to PRINT. Check that they describe the image you actually have. Leave the app-assigned Photo ID and sequence alone. A developer code means a photographic lab’s original code, not a software version.

Under Photo → Notes, keep the creator, source URL, and explanation of the source material. The practice kit’s Source Notes provides text for each photo. Use Inscription only for writing you have transcribed, and Tasks for questions that remain.

Photo → Notes keeps the source and its context alongside the image.
SCREEN 09 Photo → Notes keeps the source and its context alongside the image. Click to enlarge ↗
  1. Choose Subject under Photo. For Photo 001, enter Washington, D.C. in Place.
  2. Enter 1863-08-09 in both Date Earliest and Date Latest.
  3. Enter “Abraham Lincoln seated with newspaper and glasses” in Notes. Leave Event blank to use the shared Group event.
  4. Choose Save. Repeat for the remaining Photos using the source notes and the reference table below.
Photo → Subject distinguishes the known capture date from the Group’s broader range.
SCREEN 10 Photo → Subject distinguishes the known capture date from the Group’s broader range. Click to enlarge ↗
PhotoWhat it showsTaken datePlace
001Lincoln seated with newspaper and glasses1863-08-09Washington, D.C.
002Lincoln with John Nicolay and John Hay1863-11-08Washington, D.C.
003Abraham and Tad Lincoln with a photograph album1864-02-09Washington, D.C.
004Lincoln portrait on an album page1864-02-09Leave blank
005Mary Todd Lincoln carte de visiteNo more precise date; retain the 1860–1865 Group rangeLeave blank

For the four exact dates, use the same value in both date fields. For Photo 005, leave its own date fields blank. A publication date or a photographer’s business address is not automatically the date or place the picture was taken.

Save is part of the workflowTyping a field changes the editor. Choose Save to write the record. Revert discards pending edits. If you try to move on with unsaved changes, read the app’s save/discard/cancel question before continuing.

STEP 08

Put names to the people.

There are two useful ways to name someone. Use the record when you know who is present; use the picture when you can point to their face.

Add a name without a face marker

  1. Select Photo 001 and open Edit Record → Photo → People.
  2. Choose Add Person and enter Abraham Lincoln. Add “Identity from the credited source caption” in Notes.
  3. Choose Save. A name is useful even if no marker has been placed yet.
A person can be recorded by name before you place a marker.
SCREEN 11 A person can be recorded by name before you place a marker. Click to enlarge ↗

Point to the face in the picture

Open a Photo in Preview from its right-click menu (or open its thumbnail). Right-click the face and choose Mark Person Here…. Choose the existing person’s name or enter a new one. Repeat for other people. The Names button lets you hide or show the markers.

Photo 002 is a useful example: John G. Nicolay is on the left, Abraham Lincoln in the middle, and John Hay on the right. Photo 003 includes Abraham and Tad Lincoln; Photo 004 shows Abraham Lincoln; Photo 005 shows Mary Todd Lincoln. Use the same spelling for the same person.

The second photograph, with the three source-identified people marked.
SCREEN 12 The second photograph, with the three source-identified people marked. Click to enlarge ↗
You can leave a question unansweredDo not attach a confident name to a face you cannot identify. Keep what you know in Notes or Tasks. Names and markers can be refined later; preserving uncertainty is part of preserving the history.

STEP 09

Record where the originals are.

This is the connection between the digital collection and the things on your shelf. One Photo can have several physical prints, each with a different location and size.

  1. Select Photo 001 and choose Edit Record → Photo → Prints.
  2. Choose Add Print for each physical copy you want to record. For practice, add the three simulated copies in the table below.
  3. Choose a broad Print Location and use Print Location Note to say which binder, shelf, box, or wall. Record a print-specific size if it differs from the Group default.
  4. Choose Save. Repeat for the other Photos if you are building the full five-photo example.
Photo 001 copyLocationLocation note / size
1ARCHIVEDLeave its size blank; the demo will use a 4x6 Group default later.
2ALBUMDemo presentation binder — The Lincoln family album / 5x7.
3DISPLAYDemo gallery wall — rotating selection / 8x10.
Separate print records track separate physical copies. Scroll to see all three.
SCREEN 13 Separate print records track separate physical copies. Scroll to see all three. Click to enlarge ↗

Add “Simulated demo print; no possession of the source institution’s original is implied” in the first copy’s Notes. The other two are a simulated display copy and enlargement. In your own library, replace these examples with the real places and objects you can account for.

To match the rest of this demo Group, Photos 002, 003, and 005 each have one Archived print. Photo 004 has one Archived print and a second in DUPLICATE_BOX, with “Demo duplicates box, divider A” in its Notes. The practice arrangement totals 8 print copies for 5 Photos.

Missing prints, unusable images, and negatives

MISSING is a location state: a print was recorded but cannot be accounted for. NO_IMAGE is a condition: the print exists but has no usable picture. OTHER means a location outside the standard choices and requires a location note.

For negative-based Groups, record negative custody and individual missing or unusable negatives as appropriate. If you scanned a surviving print instead of a negative, check that the Photo’s Scan Source says PRINT. A print record does not replace the negative record.

A digital file is not a physical printDo not add print records just to clear a task. Add only the copies that exist or that you are explicitly recording as missing. The extra print copies in this walkthrough are demonstration data.

STEP 10

Bring filenames and photo dates into line.

After you replace a broad date with a Photo’s known date, its saved record may be more precise than its filename. The Verification card can show that mismatch. This is a useful prompt to bring the files up to date.

The saved dates are now more specific than four filenames. Verification shows the differences.
SCREEN 14 The saved dates are now more specific than four filenames. Verification shows the differences. Click to enlarge ↗
  1. Save your record edits and return to the Group. Turn on Reports if the right-hand cards are hidden.
  2. Read the findings. If they show filenames or embedded dates that disagree with the recorded dates, choose Fix Filenames + EXIF Dates.
  3. Wait for the operation to finish, then review the results. For Photo 001, the filename should begin 1863-08-09.

What does EXIF do?

EXIF is information stored inside a photo file. Continuum can update existing, writable EXIF date fields in supported JPEGs, so compatible apps—including photo browsers on phones—can use the historical date instead of the date the picture was scanned.

That is not guaranteed for every file. The app reports unsupported or missing fields. PNG, TIFF, and JPEGs without writable date tags do not receive these EXIF date updates. Photo 005 in the practice set is a TIFF; its Catalog still preserves its dates even though this EXIF operation does not apply.

In this captured practice run, all five embedded-date updates were skipped: the four JPEGs lacked writable date tags, and the fifth file was a TIFF. The filenames were updated, and the Catalog dates remained intact. If you see that result while following along, it matches the example; it does not mean the photo dates were embedded successfully.

An estimated date may need a specific sorting day and assigned time for other apps. The Catalog keeps the fuller range and uncertainty. Test a transferred photo in the receiving app: some transfer and sharing services remove metadata.

The Catalog remains the complete recordFixing filenames or EXIF dates does not embed every Catalog field in every image. Keep the Photo files and their Catalog together. The Schema Guide explains the separate preservation layers.

STEP 11

Finish the first pass.

Open Edit Record → Group. Now that the example has print records, enter 4x6 in Size as the simulated default. Individual 5x7 and 8x10 copies retain their own sizes.

When your digital Photos are in place and the physical arrangement has been recorded, set Status to ARCHIVED and choose Save. For a real collection, choose the status that describes the work actually completed.

Record the default print size and mark the completed example Archived.
SCREEN 15 Record the default print size and mark the completed example Archived. Click to enlarge ↗
Planned
Collection identified
Scanning
Scans in progress
Digitized
Digital Photos available
Archived
Preservation work filed

A Group can stay Archived while a research task remains. Put unfinished questions in Tasks rather than inventing answers. Use the Tasks view to return to them later. Inferred tasks, such as missing measurements, come from the records; resolve the underlying detail when you know it.

The first Group is complete: the beginnings of the demo library from the homepage.
SCREEN 16 The first Group is complete: the beginnings of the demo library from the homepage. Click to enlarge ↗

STEP 12

Find the Photos in different ways.

The menu in the top-left corner shows the current view name, such as Groups. Click it to switch views. These are different ways to browse the same Photos; switching views does not move the image files.

Photos: browse by the Photos’ own dates

Choose Photos to browse across Groups. The four precisely dated pictures and the broader-date Mary Todd Lincoln record now have their recorded dates available for browsing.

Photos shows the individual pictures across the library.
SCREEN 17 Photos shows the individual pictures across the library. Click to enlarge ↗

People: follow a person through the collection

Choose People, then Abraham Lincoln. The four tagged Photos appear together. If a picture is missing, check the person’s name in that Photo’s record and any active filters.

The person tags connect Lincoln’s four appearances.
SCREEN 18 The person tags connect Lincoln’s four appearances. Click to enlarge ↗

Events: revisit a shared occasion or collection

Choose Events and select The Lincoln family album. Here the event label is the demo collection’s shared title. Your own events could be a wedding, holiday, reunion, or a name that makes sense for your collection.

The Group’s shared event brings the five Photos together in Events.
SCREEN 19 The Group’s shared event brings the five Photos together in Events. Click to enlarge ↗

Places: browse recorded locations

Choose Places and select Washington, D.C. to explore the Photos assigned that place. Photos without a confirmed location stay unassigned. The map needs a resolvable location and online map services; do not replace an uncertain location with a convenient guess just to put a pin on it.

As your library grows, the homepage’s Places screenshot shows how another Group from the finished demo appears on the map.

Virtual Albums: make collections across Groups

A Group records where a Photo belongs in the library. A virtual album is a selection of Photos, gathered without duplicating or moving their files.

  1. Select the Photos you want to collect. Open their right-click menu, find Add to Album → New Album…, and enter Portraits across a lifetime.
  2. The screenshot shows a small beginning of an album with the same name in the finished demo. You can add Photos from other Groups as the library grows.
  3. Choose Virtual Albums from the view menu, then select the album. Add to Favorites is another quick way to collect selected Photos.
Name a virtual album for the selected Photos.
SCREEN 20 Name a virtual album for the selected Photos. Click to enlarge ↗
A first virtual album, without copying the five images into another Group.
SCREEN 21 A first virtual album, without copying the five images into another Group. Click to enlarge ↗

STEP 13

Check what you have saved.

Choose Verification from the view menu, then Check Library. Let the check finish. Review any findings and use the offered Group or Record action to investigate the relevant item.

The completed five-photo example has no verification findings. That means its records and files passed the checks; it does not prove the historical information is correct or that you have a backup.

Review the whole library after the first Group is complete.
SCREEN 22 Review the whole library after the first Group is complete. Click to enlarge ↗

Choose History to see recorded operations such as imports, record edits, and filename changes. It is a useful account of work performed. It is not a universal Undo button or a replacement for a separate backup.

History records changes made while constructing this small library.
SCREEN 23 History records changes made while constructing this small library. Click to enlarge ↗
Common first-library questions
  • The library looks empty: Check the active library in Settings, clear search text and filters, and choose All in Groups.
  • A record will not save: Read the reported field errors. Check required values, date order, and conditional fields such as an OTHER print location note.
  • There is a filename mismatch: Save the correct date first, then use the Group’s Fix Filenames + EXIF Dates action when offered.
  • The file is missing: Check that its drive is connected and the file is where the Catalog expects it. Adding the same photo again creates a new record rather than repairing the existing identity.
  • The library changed elsewhere: Reopen or reload the latest record before editing again. Avoid editing one shared library from two app sessions at once.
  • An image looks soft: Open Preview to inspect the full image. Thumbnails are browsing copies; they are not the preservation originals.

STEP 14

Share copies, keep the library.

To send Photos to someone, select them and choose Export Photos… from the right-click menu. Choose a destination outside the Photo Library. Review the export options, then choose Export.

Export copies to a separate folder, optionally including TOML metadata.
SCREEN 24 Export copies to a separate folder, optionally including TOML metadata. Click to enlarge ↗

Include TOML metadata asks the app to embed the effective Group and Photo record as structured text in the exported copies’ XMP description. It is a separate option from fixing EXIF dates. Existing image metadata is preserved either way; check the export results for any files that could not be processed.

Review the selected Photos’ notes, names, and storage details before sharing record metadata. For an ordinary photo-only handoff, leave this option unchecked. Exporting a selection does not make a complete backup of the library.

STEP 15

Preserve the whole Photo Library.

  1. Save your edits and wait for imports, exports, and filename updates to finish. Close the app before taking a consistent backup copy.
  2. Locate the library’s root folder. In Settings, the Show Library in Explorer button on Windows (Finder on macOS) can help you find it.
  3. Copy the entire library folder to a separate backup destination: every Group, every Photo, every Catalog, and the shared continuum.photos folder.
  4. Check the backup. Open a few copied images and confirm that Group Catalogs and the shared schema are present. Keep an independent copy outside the drive holding your working library.
  5. Repeat after meaningful work. Retain an earlier backup as well, so a mistaken edit is not immediately your only saved copy.
Settings identifies the active library and offers a shortcut to its folder.
SCREEN 25 Settings identifies the active library and offers a shortcut to its folder. Click to enlarge ↗
The point is preservationIf Continuum is unavailable in the future, compatible viewers can still open your retained Photo files, filenames and folders still communicate organization, and Catalogs remain readable text. Those benefits depend on keeping the files. If a Catalog is lost, details stored only in it are lost too.

When you move a library to another drive or computer, copy the whole folder and open that copied library through Settings → Add existing library…, then Save. On a fresh installation, select it in the welcome flow. Do not keep pointing at the old path after disconnecting the old drive.

STEP 16

Repeat, one Group at a time.

You now have the beginnings of the same demo Photo Library seen on the homepage: five images, their historical source details, people, physical-copy records, and a virtual album. Add your next packet or collection as a new Group, then repeat the import, description, verification, and backup steps.

  • The digital Photos open.
  • The dates reflect what is known, including uncertainty.
  • People, events, and places use consistent names.
  • Prints and negatives point to the physical originals you can account for.
  • Records are saved and verification findings have been reviewed.
  • A separate backup includes the whole Photo Library.

Walkthrough prepared with the current desktop source and Catalog schema 6. Screenshots use an isolated reconstruction of the first Group from the demo ZIP published with app v1.3.0. Physical custody, sizes, and storage notes are simulated; photo identities and source evidence follow the published demo. Interface details may change in later releases.