ON1 Photo RAW 2026.5.2 v20.5.2.19304 Mac

Tone Curve adjustments often mark the point where a quick edit becomes a deliberate one. In ON1 Photo RAW, the curve sits alongside a full suite of nondestructive tools an experienced user will reach for after culling.

1. Open the Develop module and dial in global corrections — exposure, white balance, and lens profiles from the newly expanded library.
2. Switch to Effects and stack filters in the order you want them rendered. The latest version processes these stacks noticeably faster.
3. Apply a local adjustment with a luminosity or color-range mask, then feather the edge with the refinement brush.
4. Use the Resize module and ON1’s Genuine Fractals algorithm when a print requires upscaling beyond the native resolution.
5. Export to the format and color space the next step demands, or sync the finished file back to the built-in catalog.

Point the catalog to your external drive before importing anything

Out of the box, ON1 Photo RAW defaults to a catalog location inside the user’s Pictures folder. Photographers working with external drives or NAS volumes should redirect that path before the first import. Head to Preferences > System and set the catalog destination to a folder on the working drive — moving an established catalog later means re-linking every folder manually.

The scratch disk setting lives in the same panel. When the system drive is a smaller internal SSD, pointing scratch to a fast external Thunderbolt volume prevents the beach ball during big panoramas or multi-layer composites. ON1 writes temporary data aggressively during Effects stacking and the Resize module, and a full boot drive will grind performance to a halt long before the user runs out of RAM.

Another setting that deserves early attention is the Default Develop Profile. The app ships with a neutral starting point, but photographers who prefer a camera-matching curve — closer to what the back screen showed — can assign a custom profile per camera serial number under Preferences > Develop. The new lens profiles in version 2026.5.2 v20.5.2.19304 appear automatically here once the camera body is recognized.

Disabling Automatic Write to XMP speeds up browsing, but enabling it makes the catalog portable. If another editor, or another copy of on1 photo raw on a second machine, needs to pick up adjustments, the sidecar files carry every slider position. Decide early which camp you belong to.

Register it as an external editor for Apple Photos and Lightroom

ON1 Photo RAW works as a standalone hub, but many photographers route files through it on the way to something else. The Plug-in Extras preference lets the app register as an external editor for Apple Photos, Lightroom Classic, and Capture One. Once enabled, a round-trip sends a TIFF or PSD to ON1, where Effects and local adjustments are applied, then saved back to the host catalog. The layered file stays intact, so re-editing later is straightforward.

The app also functions as a host for legacy Photoshop plug-ins. Under Preferences > Plug-ins, pointing ON1 to a folder of .plugin files — the Nik Collection, old Topaz filters, the usual suspects — makes them available inside the Effects module. They appear in the Add Filter menu under a custom category. Stability varies by plug-in age, but most Intel-compiled filters survive the translation layer on Apple Silicon without complaint.

On the macOS side, ON1 respects the system color picker and the media browser in the Open dialog. It registers as a Quick Look provider, so pressing the spacebar on a catalog thumbnail in the Finder displays a large preview without launching the full interface. Spotlight indexes the catalog database, meaning a search for a filename or keyword typed into the menu bar can locate an image and open it directly in the Browse module.

Export presets can write to iCloud-synced folders and named albums in Apple Photos. Photographers who use on1 photo raw as their primary editor often set a preset that sends finished JPEGs to a shared album, cutting out a manual upload step.

Restore missing folder access after a macOS permissions reset

Catalog folders go missing after a macOS update. When the system reassigns drive permissions, ON1 sometimes loses access to folders that sit outside the home directory. The fix is a trip to System Settings > Privacy & Security > Files and Folders, where the app needs the removable volumes and network volumes toggles turned on again. After that, right-click the missing folder in the Browse module and choose Locate.

Sluggish performance with large catalogs. The database can cross half a terabyte in previews alone. Under Preferences > Browse, reduce the preview size and set the cache to a 30-day expiry. For catalogs exceeding 100,000 images, splitting into a work catalog and an archive catalog — both stored on the same fast volume — keeps browsing responsive.

RAW files display with a color cast that differs from the camera JPEG. The default rendering engine reads the sensor data without the camera manufacturer’s secret sauce. Switching the Develop profile from ON1 Standard to a camera-matching profile, or building a custom preset from a Color Checker shot, resolves most cases. The profile selector lives inside the Develop module header, not in Preferences, which trips up new users.

Some plug-ins fail to appear in the Effects list. The app scans only the designated plug-in folder at launch. Dropping a fresh .plugin bundle into that folder and expecting it mid-session does not work — a restart of ON1 is required. If the plug-in still fails to load, check whether it is Intel-only and that Rosetta 2 is installed on Apple Silicon machines.

The clone stamp lags on high-resolution sensors. When working on 45-megapixel or larger files, lowering the preview quality slider inside the Edit module — not the export slider — to half-resolution cuts brush latency without affecting the final render. The final output always samples the full image data.

The workflow stays local from import through export, and the app runs natively on both Apple Silicon and Intel Macs under macOS Ventura or later.

Version 2026.5.2 brings quicker filter rendering across the Effects module and adds support for several new lens profiles. ON1 ships the update as a standard installer for macOS 13 and later.

• macOS 13 Ventura or later
• Apple Silicon or Intel 64-bit Mac