CoinLoupe Guides

How to photograph a coin so an app (or a dealer) can identify it

Published October 21, 2026

Whether you're using a coin identifier app, posting on a collector forum or emailing a dealer, the quality of the answer depends on the photo. A worn date that's perfectly readable in hand can disappear under a ceiling light and a phone flash. You don't need a macro lens or a light box — six habits get you most of the way.

1. Light from the side, not from above

Coins are low-relief objects: the design is only a fraction of a millimetre high. Light coming straight down (ceiling lights, flash) fills in every shadow and flattens the design. Light coming from the side at a low angle throws small shadows that make lettering and dates stand out.

Use a desk lamp or a window with indirect daylight (not direct sun).
Place the light to one side, a little above the coin, and try rotating the coin — one angle usually makes the date pop.
Turn the flash off. It causes hot spots and glare, especially on shiny or silver coins. A phone's torch held to the side is fine.

2. Kill the glare

Bright white patches hide the details you need. If you see glare, move the light further to the side, or diffuse it — a sheet of white paper between lamp and coin works. Matte, darker coins are easier; for bright uncirculated or proof coins, softer light is better.

3. Plain background, coin flat

Use a plain, non-reflective background — a sheet of paper, a grey or black cloth. Patterned tablecloths confuse both autofocus and recognition.
Lay the coin flat and hold the phone parallel to it. A tilted shot makes the coin oval and distorts lettering.
One coin per photo. A pile of coins makes it unclear which one you're asking about.

4. Fill the frame — but don't get too close

Phone cameras can't focus closer than a few centimetres with the main lens, and getting very close also distorts the coin. A better approach:

Hold the phone about 10–20 cm away and use 2x–3x zoom (or the telephoto lens if your phone has one) so the coin fills most of the frame.
Tap the coin on screen to focus and wait for it to sharpen.
Brace your elbows on the table, or prop the phone on a mug or a stack of books, to avoid shake. In dim light, shake is the main cause of blur.

5. Photograph both sides — and the important details

Many coins share a design on one side and differ on the other. Euro coins have a common side; US Morgan dollars carry the mint mark on the reverse; British coins change portrait by reign. Always take:

The obverse (front, usually the portrait and date).
The reverse (back).
For anything that might be valuable, a close-up of the date and mint mark, and of any area that looks doubled or unusual.
For a possible silver coin, a shot of the edge.

6. Show the coin as it is

Don't clean or polish a coin for the photo — it permanently lowers its value. (Why.)
Don't apply heavy filters or "enhance" effects. They can invent detail and shift colors that matter (for example, red vs brown copper).
Shoot in natural-ish white light so color is close to reality.

A simple home setup that works

If you have a batch of coins to photograph, set up once and keep everything in place:

Put a sheet of plain grey or white paper on a table next to a window, or under a desk lamp.
Position the lamp low on one side. Tape a sheet of thin white paper in front of it if the coins show glare.
Stack a few books on either side of the paper and lay the phone across them, camera down, so it sits flat and steady above the coin. A phone stand or a cheap copy stand does the same job.
Set the zoom so a coin fills most of the frame, lock focus if your camera app allows it, and swap coins in and out without touching the phone.
Shoot the obverse of every coin first, then flip them all and shoot the reverses, so photos stay in a predictable order.

Name or number the coins as you go (a numbered sheet of paper under each coin works), so you can match obverse, reverse and close-ups later.

Common problems and fixes

Problem	Likely cause	Fix
Date unreadable	Light from above; worn date	Low side light; rotate the coin; zoom in
White blotches	Flash or direct light reflecting	Flash off; diffuse or move the light sideways
Blurry	Too close, or hand shake	Step back and zoom 2x; brace the phone; tap to focus
Oval coin	Phone not parallel	Hold directly above, flat
Wrong country/coin identified	Only one side shown	Add a photo of the other side

Photographing for a forum or a dealer

Add a scale reference if size matters (a ruler, or say the diameter you measured), state the weight if you have a 0.01 g scale, and say where the coin came from. People who know coins are generous with their time when the photos are clear — and blunt when they aren't.

Photographing for an identifier app

Apps work best with the same habits: one coin, flat, filling the frame, both sides. In CoinLoupe (Android), the camera screen shows a circle to place the coin in and a torch toggle; after the front, it asks whether to photograph the back too, which helps accuracy. If the date or mint mark can't be read it gives a specific photo tip, and if the photo doesn't show a coin at all, it doesn't use one of your 3 free daily identifications. You can also pick a photo you've already taken. Remember that any app's value is an estimate — for a coin that could be rare, use these photos to ask a professional grader (PCGS, NGC) or a reputable dealer.

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