How to photograph a find for accurate identification

A good photograph halves the identification time. A bad photograph triples it, or stops the attribution dead. Most detectorists photograph their finds on a kitchen worktop under a ceiling light — which is exactly the setup that creates the worst possible images. Here’s the five-shot setup that gets any identifier (DetectID, your FLO, a forum specialist) what they actually need.

What identifiers actually need to see

Identification depends on details that wear and patina conspire to hide. The features you want your photo to render clearly:

• Legend lettering, even fragmentary — the single most useful diagnostic on hammered and Roman coinage.
• Bust facing direction and beard style for portrait coins.
• Reverse pattern— cross length, pellet configuration, shield quartering.
• Initial mark at the start of the legend (Tudor / Stuart hammered).
• Mintmark in the exergue (Roman late bronze).
• Edge and flan shape— hammered vs milled, cut halfpenny vs round.

The five-shot setup

Shot 1: obverse, straight on

Coin flat on the surface, camera directly overhead. The bust should fill 60–80% of the frame. Focus on the highest point of the design.

Shot 2: reverse, straight on

Flip the coin, repeat. Same composition, same lighting.

Shot 3: obverse with scale

Place a ruler, callipers or a familiar coin (UK 5p is 18 mm; 10p is 24.5 mm; 50p is 27.3 mm) alongside the find. This lets the identifier verify your diameter measurement and catches transcription errors.

Shot 4: edge / profile

Stand the coin on its edge if it’s thick enough, or photograph at a 30° angle to show the flan profile. This reveals striking irregularities, edge clipping, cracks and (for milled coins) edge denticulation.

Shot 5: any diagnostic detail close-up

If a specific feature is critical — a legible part of the legend, an initial mark, a privy mark in a reverse angle — take a close-up. Many phones will let you do this with a tap-to- focus on the detail before shooting.

Lighting

Hard direct light (ceiling spot, camera flash) creates harsh specular highlights on the coin’s high points and pitch-black shadows in the low points. Both wreck legibility.

What you want is even, diffuse light from above. Two cheap options that both work:

• Window light on an overcast day. Coin on a piece of white paper on a table near a north-facing window. No direct sun. This is genuinely the best free lighting available.
• A daylight LED desk lamp through a thin white cloth (a single layer of kitchen roll or a white pillowcase works). The cloth diffuses the light so it wraps around the relief instead of throwing hard shadows.

Background

Plain, dark, matte. Black craft paper, a piece of black felt, or even a clean dark towel work well. Avoid:

• White worktops— the camera meters for the bright background and underexposes the coin.
• Patterned surfaces— visually noisy, makes the coin’s edge hard to see.
• Reflective surfaces— create distracting reflections of the coin’s underside.
• Your hand— tempting for scale, but skin tones throw off the camera’s white balance and make metals look the wrong colour.

Composition and framing

• Camera directly above the coin, lens parallel to the surface. Off-axis shots foreshorten the design.
• Coin fills most of the frame. If the coin is a tiny disc in a huge field of background, you’re asking the identifier to zoom in to a section that’s a fraction of the camera’s sensor resolution. Get closer.
• Orient the bust upright. Most identifiers read coins with the bust the right way up. A sideways photo is harder to interpret than it sounds.
• Use the rear camera, never the selfie camera. The rear lens has higher resolution and better optics.

Focus

Phone cameras default to autofocus, which on a small detailed object often picks up on the wrong plane. Force the focus:

• Tap the screen on the coin’s surface to lock focus there.
• Hold the camera steady— brace your elbows on the table if you can’t use a tripod. A slight shake at close range visibly softens the image.
• Use timer mode (2 seconds)if you’re getting motion blur from pressing the shutter button.

Common mistakes

• Camera flash firing on a shiny coin. Turn flash off explicitly. Use diffuse window or lamp light.
• Coin photographed inside the hole it was dug from. Clean a small flat area on a piece of black paper. Photograph the coin there. Field photos are atmospheric but useless for ID.
• Tip-of-finger holding the coin in the frame. Use a small lump of poster putty to stand the coin up if you need to angle it. Keep fingers out.
• Photographed at a 45° angle. Straight overhead, lens parallel to the coin face.
• Coin tiny in a huge frame of kitchen worktop. Get closer. Frame should be 80% coin, 20% background.
• Two coins in one shot. Photograph each coin separately, even if they're a pair. Helps the identifier address them individually.
• JPEG compressed to oblivion by an over-eager messaging app. Send the original file, not the in-app preview. WhatsApp re-encodes images aggressively; email or a file-share link preserves quality.

Editing

Less is more. Acceptable post-processing:

• Croptightly around the coin (with the scale reference, if it’s in shot).
• Rotate so the bust is upright.
• Mildly raise exposure if the image came out dark.

What to avoid:

• Sharpening filters— create false detail that mis-leads identifiers.
• Saturation boosts— change the apparent metal colour.
• “AI enhance” modes(yes, on phones) — can hallucinate details that aren’t actually on the coin. Off.

A quick checklist

Before you send a photo to an identifier, run through:

1. Coin fills at least 60% of the frame?
2. Plain dark background, no clutter?
3. Lighting is diffuse, no harsh hot-spots?
4. Focus is sharp on the coin’s surface?
5. Both faces photographed?
6. Scale reference included in at least one shot?
7. Bust upright, not sideways?
8. No filters or sharpening applied?