Last month I sat down to pull selects from a beauty shoot I’d done for a skincare client, and what should have been a 20-minute cull turned into an hour-long archaeological dig. Somehow I had imported the same card twice, and I was staring at hundreds of near-identical RAW files with no fast way to know which ones I’d already flagged. It wasn’t the first time this had happened. Between overlapping shoots, client re-sends, and the occasional “just in case” backup import, my Lightroom catalog had quietly become a mess. Duplicate hunting was always manual, always slow, and always something I’d tell myself I’d fix later.

So when I saw that Lightroom had actually shipped a native duplicate finder, I dropped everything and watched Matt Kloskowski’s breakdown of it immediately.

What Lightroom Actually Built (and Why It Took This Long)

For years, the only way to find duplicate photos in Lightroom was to lean on third-party plugins, sort by capture time and squint at thumbnails, or just accept that your catalog was going to carry some dead weight forever. Adobe had the data to do this natively, they just hadn’t built the interface for it. Now they have, and it lives in a spot that makes sense once you know where to look.

In his tutorial, Matt Kloskowski walks through the new feature step by step, and what struck me right away was how clean the implementation is. This isn’t a buried developer setting. Adobe actually surfaced it in a logical place, and the logic behind how it identifies duplicates is worth understanding before you start deleting anything.

How to Find and Review Your Duplicates in Lightroom

The feature works by comparing file metadata, specifically capture time and file size, to flag images that are functionally identical. Here’s how to get to it:

Open Lightroom and go to your Library module. In the Catalog panel on the left, you’ll find a new option that surfaces duplicate photos. When you click it, Lightroom groups the matches and shows you what it found. The view presents the duplicates in pairs or groups so you can compare them side by side rather than just getting a flat list.

What Matt emphasizes in the video, and this is the part most people will want to slow down for, is that Lightroom is smart enough to show you which version has edits applied and which one is essentially a clean import. That distinction matters enormously for anyone working with client files. You don’t want to delete the copy you’ve already spent 45 minutes retouching just because it shares a capture timestamp with an unedited duplicate from a re-import.

Before you delete anything, review each group. Look for the edited badge or star ratings on one version. If both copies are untouched, it’s safe to remove one. If one has edits, metadata, or a collection membership, keep that one and remove the clean duplicate.

Matt also points out that Lightroom moves removed duplicates to a holding state rather than instantly deleting them from your drive, which gives you a recovery window if you make a mistake. That alone would have saved me some stress during my skincare shoot situation.

Where the Metadata Match Can Trip You Up

Here’s where I’d add a small caution from my own catalog. The duplicate detection is based on capture time and file size, which works well for identical exports or double imports from the same card. But I shoot tethered fairly often for beauty work, and I’ve run into situations where I’ve exported a client proof as a JPEG, then re-imported that JPEG back into the same catalog for delivery tracking purposes. The file size will be different from the original RAW, so Lightroom won’t flag those as duplicates. That’s correct behavior, but it means the tool isn’t a complete substitute for manual catalog hygiene. It solves the “imported the same card twice” problem beautifully. It won’t catch every redundant file situation you’ve created yourself through a complicated delivery workflow.

The flip side is also worth noting. If you’ve shot a bracketed exposure sequence or done any in-camera HDR merges, double-check before you delete anything flagged as a duplicate. Bracketed frames taken in rapid succession can sometimes share very close timestamps, and while Lightroom generally handles this correctly, it’s worth a second look when you’re working with files you know were shot in bursts.

Cleaning Up an Old Catalog Without Losing Your Mind

For anyone sitting on a catalog that’s been accumulating for years, the best approach is to run the duplicate check one folder or date range at a time rather than throwing your entire library at it all at once. That’s what Matt suggests in the video, and it lines up with how I’ve started working through my own backlog. I started with 2023 imports, cleared those, and I’m working backward. It’s less overwhelming than staring at a global count of potential duplicates, and it means I’m also reviewing older edits while I go, which has turned into an unexpected quality-control pass.

The Real Win Here Is Headspace, Not Just Hard Drive Space

The practical benefit of recovering storage is real, but honestly what this feature gives me more than anything is confidence in my catalog. When I’m pulling selects for a client or searching for a specific image from a shoot six months ago, I don’t want to second-guess whether I’m looking at the right version. A clean catalog is a faster catalog, and a faster catalog means I spend more time on the actual retouching work, which is where my energy should be going.

If you want to see exactly how this looks inside Lightroom, including the specific panels and the visual grouping of duplicate sets, watch Matt Kloskowski’s full walkthrough on YouTube. The visual component makes the interface much easier to navigate the first time through.