Photo Types Identification Guide: Daguerreotype to Kodachrome

Why Photo Type Matters

Identifying the type of old photograph you have does three things: it pinpoints when the photo was likely taken (each process has a clear date range), it tells you how fragile the photo is (different processes need different handling), and it helps you pick the right restoration approach (AI models handle some types better than others).

This guide covers the seven most common types of photographs a family archive might contain, from the earliest photography through color film.

1. Daguerreotype (1839-1860)

The first commercially successful photographic process. Rare in family archives today but unmistakable when present.

How to identify:

• Image appears on a polished silver-coated copper plate
• Highly reflective mirror-like surface
• Image flips between positive and negative when tilted
• Always housed in a hinged leather or velvet-lined case with a glass cover
• Extremely fragile — never remove from the case

Era: 1839-1860 primarily. After 1860, almost entirely replaced by ambrotypes and tintypes.

Care: Never touch the surface. Store the case closed in a cool, dry location.

Restoration: Capture through the case glass in even light, avoiding reflections. Restory's Enhance Details (4 coins) can improve digitized daguerreotypes significantly.

2. Ambrotype (1854-1870)

A cheaper alternative to daguerreotypes using a glass plate.

How to identify:

• Image on a glass plate backed with dark material (cloth or paper)
• Not reflective — appears as a normal positive image
• Usually in a hinged case similar to daguerreotypes but thinner
• Glass is fragile, often cracked in old examples

Era: 1854-1870. Brief popularity between daguerreotypes and tintypes.

Care: Handle by the edges only. Cracked ambrotypes can be carefully stabilized but not repaired.

3. Tintype (1856-1930s)

The dominant cheap photography format for decades. Common in family archives.

How to identify:

• Image on a thin sheet of iron (not tin) coated with dark lacquer
• Feels metallic and slightly magnetic
• No reflection, unlike daguerreotypes
• Often without a case — loose sheets or cards
• Thickness: about 0.3-0.5mm

Era: 1856-1930s with peak use 1860s-1890s. American Civil War soldiers' portraits are often tintypes.

Care: Can rust in humidity. Store in acid-free sleeves in a cool, dry place.

Restoration: Responds well to AI. Capture on a non-reflective surface with angled light to minimize glare from the lacquer.

4. Carte de Visite / CDV (1859-1890s)

Small portrait photographs mounted on stiff cardstock, sold by photographic studios.

How to identify:

• Approximately 2.5 x 4 inches (6.4 x 10.2 cm)
• Albumen photograph mounted on card
• Studio name and location printed on back or below image
• Paper can be thin, rigid card stock
• Often in a family photo album (they were collected like baseball cards)

Era: Peak 1860s-1880s. Later CDVs exist into the 1890s.

Care: Store flat in acid-free pages. The albumen layer can flake.

Restoration: Good candidates for AI restoration. The studio name often helps date the photo within a few years.

5. Cabinet Card (1866-1920s)

Larger than CDVs but similar format — portraits on mounted cards.

How to identify:

• Approximately 4.25 x 6.5 inches (10.8 x 16.5 cm)
• Gold or silver edges on some examples
• Ornate studio backmarks (often full decorative prints on the back)
• Corners round or square depending on decade
• Usually better quality than CDVs

Era: Peak 1880s-1900s. Some production into the 1920s.

Care: Same as CDVs — flat, acid-free, cool.

Restoration: Excellent restoration candidates. Cabinet cards are the "golden age" of formal portrait photography and AI handles them well.

6. Silver Gelatin Print (1880s-1960s)

The classic "old photo" most families have. Black-and-white prints on photographic paper.

How to identify:

• Glossy or matte paper
• Standard sizes emerged over time: 3.5x5, 4x6, 5x7, 8x10
• Black-and-white tones with no color
• Paper stamp on the back often indicates Kodak or similar manufacturer
• Can show silver "mirroring" as it ages (silvery metallic sheen in dark areas)

Era: 1880s-1960s dominant. Silver gelatin continued alongside color film but faded from common use by 1970s.

Care: Store in acid-free sleeves. Silver mirroring is a sign of slow chemical degradation — digitize these first.

Restoration: The overwhelming majority of restoration work is on silver gelatin prints. AI handles them extremely well.

7. Kodachrome / Ektachrome (1935-2009)

Color film slides and prints, recognizable by their distinctive color palette.

How to identify:

• Color rather than B&W
• Often in 35mm slide mounts (cardboard or plastic)
• Prints show characteristic early color film look
• Colors shift toward orange/yellow with age
• Kodak "KODACHROME" stamp on slide mounts

Era: 1935-2009 (Kodachrome). Ektachrome 1946-present.

Care: Store slides in plastic-free pages (plastic can interact with film emulsion). Cool, dry, dark storage.

Restoration: Responds well to enhancement and color correction. Restory's Enhance Details handles Kodachrome color shift specifically.

Comparison Table

Type	Era	Typical appearance	Rarity today
Daguerreotype	1839-1860	Reflective metal plate in case	Very rare
Ambrotype	1854-1870	Glass plate in case	Rare
Tintype	1856-1930s	Metal card, matte	Moderate
CDV	1859-1890s	2.5x4 mounted	Common in old albums
Cabinet card	1866-1920s	4.25x6.5 mounted	Common
Silver gelatin	1880s-1960s	Standard B&W print	Very common
Kodachrome	1935-2009	Color slide/print	Common

What to Do with Each Type

Regardless of type, the workflow is:

1. Identify (using this guide)
2. Document (photograph the original in the case/mount if present)
3. Digitize using your iPhone or scanner (see iPhone digitizing guide)
4. Restore in Restory — the AI detects the photo type's damage patterns and applies appropriate corrections
5. Preserve the original in archival-quality storage

For specific process questions (how to handle a cracked ambrotype, what to do with a tintype that's rusting), consult a professional conservator. For home digital restoration, AI handles all types well.

Related Reading

• How to date old photos by visual era markers
• Preserving family archives
• The ultimate guide to photo restoration

Frequently Asked Questions

How can I tell a daguerreotype from a tintype without touching it?

Tilt it in the light. Daguerreotypes flip between positive and negative images at different angles — the image seems to "disappear and reappear" as you rotate. Tintypes stay as a stable positive image from any angle. Daguerreotypes also look like a mirror when tilted past the viewing angle; tintypes do not. A tintype is also physically lighter and slightly magnetic; daguerreotypes are heavier and not magnetic.

Are daguerreotypes valuable?

Some are, particularly identified portraits of notable people, photographs of historical events, or early examples (1840s). Most family daguerreotypes are not monetarily valuable but are historically irreplaceable. Never sell a daguerreotype without having it appraised by someone who specializes in photographic antiques.

What should I do if I inherit a box of unknown old photos?

Start by photographing each in its current state (case, mount, any writing on the back) for your records. Then use this guide to identify the type of each. Store them in acid-free boxes or sleeves appropriate to their format. Digitize the most important first. Consult a professional conservator if any seem particularly fragile or valuable.