Museums reduce the risk of damage by treating digitization as a preservation workflow, not just a scanning task. They first define how the digital copy will be used, identify each photograph’s materials and condition, then choose equipment and handling procedures that support the object without excess light, heat, pressure, or bending. Fragile or unstable photographs may need a conservator’s assessment before they are moved or imaged.
Digitization is a preservation decision, not just a scan
A digital image can make a photograph easier to study and share, but it does not preserve the physical object by itself. A museum still has to protect the original before, during, and after capture, and must care for the resulting files over time. The safe method depends on the photograph’s materials and condition as well as the intended uses of the digital copy.
Before choosing a scanner or camera setup, staff need to decide what the project is meant to accomplish. Is the copy for online viewing, research, publication, or another institutional use? Who will access it, how will it be presented, and where will the files be stored? Those answers shape the required image quality, metadata, equipment, handling plan, and file-management workflow. The Library of Congress (LoC) lists these as planning considerations for digitization projects in its Reformatting, Digitizing, and Digital Preservation FAQ.
This planning also gives staff a chance to consider the effect of the work on the original. Every move and handling step is part of the risk assessment. If the object cannot be placed on the capture equipment and removed without force, pressure, or unsafe support, the process needs to change—or stop until a preservation specialist advises on next steps.
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Identify and assess the photograph before handling it
“Photograph” covers objects made with different processes and materials. A print, a mounted image, and a film negative may have different supports, binders, image materials, and coatings. These differences affect how an object can be handled, supported, and stored. The LoC recommends identifying those components rather than assuming that every photograph can be treated alike. Its Care, Handling, and Storage of Photographs guidance also connects the object’s materials and condition to appropriate care.
Before routine capture, staff inspect the object and note damage or instability that could make handling unsafe. Conditions that warrant caution include separation from a mount or support; curling, bending, creasing, folding, wrinkling, or cockling; cracks, brittleness, tears, stickiness, or adhesion to another surface. The assessment should record what is present and whether the item can safely proceed through the planned workflow.
- Check the support and edges. Note whether the photograph is mounted, loose, curling, separating, or too fragile to move safely.
- Look for surface and structural problems. Cracks, tears, creases, cockling, stickiness, and adhered layers can make routine placement or removal hazardous.
- Consider the reverse and the housing. The item may need support while being moved, and its housing may be part of how staff can handle it safely.
- Flag uncertain or deteriorated materials. A photograph stuck image-side down or a deteriorated film negative may need to be excluded from routine capture while specialists determine what is safe.
This is a triage step, not an invitation for imaging staff to test whether an object will tolerate pressure or flexing. If the condition is uncertain, pause and ask preservation staff or a photograph conservator to assess it. A record of exclusions and treatment decisions helps the institution keep track of items that did not enter the production line instead of silently omitting them.
Choose equipment that supports the object and controls exposure
The capture setup must suit the photograph’s format and condition. The LoC’s digitization FAQ rules out form-feed equipment for fragile, high-value, fine-art, special, or archival materials such as photographs. Equipment should limit exposure to light and heat, be sized appropriately for the object, and allow the staff to provide whatever support it needs.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesA flatbed scanner and a camera-copy setup may each be appropriate in some circumstances, but there is no universal winner. The choice should follow the object and the project requirements: Can the photograph rest on the equipment safely? Can staff position and retrieve it without bending or dragging? Can the setup limit light and heat exposure and meet the project’s image-quality targets? Does it provide a safe way to support an unusually large or shaped object? The LoC’s guidance does not prescribe one capture system for every photograph.
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Never press a photograph flat with a pane of glass or Plexiglas to make it easier to capture. The LoC warns that pressure from a flattening pane can crack media or cause it to detach. A curled or cockled photograph should not be forced into a flat position simply because a device works best that way. Instead, select a setup that accommodates the object’s shape, or ask a conservator whether stabilization is needed before capture.
Large or unusually shaped objects need particular attention to support. The capture area and handling path should accommodate the item without bending it, dragging it across a surface, or leaving it to overhang unsafely. If the object cannot be supported adequately with the available setup, that is a reason to revise the plan—not to improvise with pressure.
Prepare the work area and handling routine
A clean, uncluttered workspace makes it easier to keep the photograph supported and reduces avoidable handling risks. The work surface should have enough room for the object and its housing, with a clear path between storage and capture equipment. Food and drink should be kept away. Staff should prepare the work area before bringing the photograph to it, rather than leaving the object exposed while making space.
Handling procedures should be consistent and practiced. Wash and dry hands before handling, move objects carefully, and avoid touching the image area. The LoC’s photograph guidance states: “Avoid touching the image area of a photograph.” Where possible, handle the photograph by its edges or housing, while keeping it supported. This is a handling principle, not permission to grip a fragile edge that is already damaged.
Glove choice depends on the object and task. The LoC’s digitization workspace guidance specifies nitrile rather than cotton or nylon gloves for photographs; its photograph-care guidance also recommends clean hands or clean nitrile gloves. Gloves can limit dexterity and become soiled, so they do not replace training or careful support. Staff should use the institution’s procedures and change or clean gloves when needed, rather than assuming that gloves alone make handling safe. See the LoC’s Recommendations for Workspace for its digitization-workspace guidance.
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Training matters because even a well-designed capture station can be used unsafely. Staff should know how to support the object on the equipment, move it without dragging, and recognize when a task is beyond routine handling. The goal is to keep the photograph supported throughout placement, capture, and removal—not to rely on a fast workflow that asks a person to bend, press, or pull the object into position.
Stop routine capture when conservation stabilization is needed
Some photographs need attention from a trained conservator before they can be transported, handled, or imaged safely. The LoC describes stabilization examples such as relaxing a cockled or creased photograph and mending tears. These are conservation interventions, not repairs for an imaging technician to attempt during a digitization session.
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Pause the workflow if a photograph is severely unstable, stuck to another surface, separating from its mount, or otherwise beyond safe routine handling. Refer the decision to preservation specialists and the curator, who can consider the object’s condition and the project’s needs. Treatment may make capture possible, but not every item will be appropriate for immediate digitization. Record the decision, any stabilization, and any exclusion so future staff can understand why the object was handled differently.
Set image-quality targets for the intended use
There is no single resolution setting that is right for every museum photograph. The LoC says resolution depends on what is being digitized and how the resulting image will be used; resolution is not the only consideration. A target chosen for one object class or access purpose should not automatically be applied to a different material or project.
For institutional projects, the LoC points to the Federal Agencies Digital Guidelines Initiative (FADGI) Technical Guidelines for Digitizing Cultural Heritage Materials. The landing page identifies the Third Edition (2023), developed by the Still Image Working Group in 2022–2023, and says the guidelines cover photographic prints and negatives. They address equipment, process, image-performance metrics, quality management, and metadata. FADGI describes the guidelines as a framework for establishing conformance targets according to intended use; they are a basis for a project’s specifications, not a substitute for deciding what the object requires.
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A useful quality plan considers more than a number in a resolution field. It should define suitable targets for the object class and use case, establish how staff will check image performance, and account for metadata and file handling. The project should be able to identify what was captured, how it was described, and whether the output meets the quality requirements it set. The chosen targets should be documented so quality checks are consistent across the project.
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Manage the digital files as part of the same workflow
Capture does not finish the preservation work. A museum needs a plan for saving, maintaining, and accessing the digital files, including the metadata needed to manage them. The LoC FAQ’s general recommendations for preserving digital files are to maintain copies on at least two different storage media in separate physical locations and migrate copies to a current storage medium about every five years. These are general recommendations from the FAQ, not a complete preservation plan for every institution.
File storage should be decided during project planning, rather than after capture. The number and location of copies, the institution’s quality-management procedures, and the needs of users all affect how the project should be organized. A digital surrogate can support access while reducing the need to consult an original in some contexts, but it does not remove the need to care for the photograph itself.
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After capture, return the photograph to a suitable protective enclosure and store it according to its process and condition. Enclosures can help reduce exposure to dust, light, and handling, but a material is not suitable merely because it is sold as archival or photo-safe. The LoC says photo-safe storage materials should meet the physical and chemical requirements of ISO 18902, including passing the Photographic Activity Test (PAT).
Suitability still varies by photograph type. The LoC cautions against plastic enclosures for nitrate or acetate negatives and notes that some photograph types are not suited to buffered enclosures. If the format is uncertain, or the correct enclosure is unclear, follow collection-care or conservator advice rather than choosing a sleeve based on a general label.
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Storage conditions are separate from capture-room settings. On its photograph-care page, the LoC recommends relative humidity of 30–50%, a cool environment at or below 70°F, and relative-humidity fluctuations ideally below 5% in 24 hours. It recommends 40°F or below for color photographs and film negatives. These are LoC storage recommendations, not universal specifications for a digitization bench or a claim that every institution can use the same conditions without considering its collection and facilities.
When to use an outside digitization provider
An institution considering outsourced work should ask whether the provider can handle the collection safely and whether preservation or conservation expertise is available if an object needs stabilization. The LoC recommends choosing providers that also offer preservation and conservation services because safe handling and treatment decisions may be needed. If a provider lacks preservation expertise, the LoC FAQ advises choosing locally to avoid shipping the collection, especially overseas.
Before work begins, the institution should establish how the provider will assess condition, support objects, control exposure, handle exclusions, and document the work. It should also make sure the provider can meet the project’s image-quality, metadata, and file-management requirements. An outside service does not remove the institution’s need to decide which objects can proceed and how the originals will be cared for when they return.
A practical decision path for each photograph
- Define the project. Specify the audience, intended use, presentation, storage, and image-quality requirements for the digital copy.
- Identify the object and inspect its condition. Record its process and materials where known, then flag damage, instability, adhesion, or uncertain formats.
- Decide whether routine handling is safe. If the photograph is unstable or cannot be moved and supported without force, pause for preservation or conservator review.
- Select a suitable capture setup. Exclude form-feed equipment for fragile or archival photographs; choose a system that fits the object, provides support, and limits light and heat.
- Prepare the workspace and staff. Clear and clean the area, follow the institution’s glove and handling procedures, and keep the photograph supported without touching the image area.
- Capture and check the output. Use the project’s documented targets and quality-management process, including the required metadata.
- Rehouse the original and steward the files. Return the photograph to suitable storage and maintain the digital copies under the institution’s preservation plan.
The safest workflow is therefore the one that fits the individual photograph rather than forcing every item through the same scanner, settings, or handling routine. When the object’s condition or materials make safe capture uncertain, deferring digitization is a valid preservation decision.
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