ON1 Photo RAW MAX 2025.2 is an all-in-one post-processing software for photographers that combines photo management, RAW processing, layer editing, and special effects. It aims to provide photographers with a seamless, non-destructive workflow from import to export. This article will take an in-depth look at its interface, core operation workflow, and tips for efficient use.

1. Detailed Explanation of the Core Interface and Workspace

After launching the software, you will see a highly integrated and customizable workspace, mainly divided into the following modules:

Top Menu Bar and Toolbar: Includes standard menus such as File, Edit, and View, as well as customizable shortcut tool icons below (such as crop, brush, gradient filter, etc.).
Left Panel Area:
- “Browse” Module: A library similar to Lightroom, used to import, manage, cull, and rate photos.
- “Cull” and “Collections”: Quickly locate specific photos.
Central Viewing Area: The photo display and main editing area. Supports multiple view modes such as single image, compare, and cull.
Right Panel Area (Core Workspace): Changes dynamically according to the selected module.
- Under the “Edit” Module: Includes panels such as “Presets,” “Filters,” “Local Adjustments” (brush, gradient, radial filter), “Layers,” “Details” (sharpening and noise reduction), “Lens Correction,” “Color,” and “Effects.” All adjustments are applied non-destructively in a stacked form.
- Under the “Browse” module: Displays metadata, keywords, and the quick adjustment panel.
Bottom panel area: Displays the filmstrip (thumbnails of all loaded photos) and module switching tabs (Browse, Edit, Effects, Browse+, Export, etc.).

You can select a preset layout (such as “Edit Only” or “Dual Screen”) via the Window > Workspace menu, or simply drag the panel boundaries to customize it.

II. Complete Workflow: From Project Creation to Final Export

Step 1: Launch and Photo Import

After launching the software, you will enter the “Browse” module by default. There are two main ways to import photos:

Add from folder: Click the “Add Folder” button at the bottom of the left panel and select a folder on your Mac; the software will catalog its contents (without moving the original files).
Import files directly: Click the “Import” button in the toolbar, or use the shortcut ⌘Cmd + I, to open the import dialog. You can select photos from a camera, memory card, or local directory, and choose to copy them to a new location, add keywords, and more.

Tip: In the “Browse” module, you can press the spacebar to preview the selected photo in full screen.

Step 2: Photo Management, Filtering, and Rating

Select the target folder in the “Folders” list on the left, and all photos will be displayed in the central grid view.

Rating: Select one or more photos and press the number keys 1-5 to assign a star rating, or press 6-9 to set a color label.
Filtering: Use the filter bar at the top to quickly filter photos by rating, color label, keywords, camera model, and other criteria.
Add to Collection: Right-click a photo and select “Add to Collection” to create personalized groups.

Step 3: Enter the “Edit” Module for RAW Processing

Double-click the selected photo, or select it and click the “Edit” tab in the bottom module bar to enter the core editing environment. The right panel will load all adjustment tools.

Basic Correction: First, check “Remove Chromatic Aberration” and “Enable Profile Corrections” in the “Lens Corrections” panel. In the “Color” panel, you can calibrate white balance (use the eyedropper tool to click on a neutral gray area).
Global Adjustments: In the “Develop” panel (i.e., the basic adjustment panel), adjust the Exposure, Contrast, Highlights, Shadows, Whites, and Blacks sliders. It is recommended to enable the “Real-Time Preview” button in the upper right corner of the panel.
Local Adjustments: Click the tools in the “Local Adjustments” panel (Brush K, Graduated Filter G, Radial Filter J), paint or drag on the photo to create a mask, then adjust exposure, clarity, and other parameters—affecting only the masked area.
Applying Effects: Switch to the “Effects” module (or use the “Effects” panel on the right) to quickly apply presets like HDR, Dynamic Contrast, Black & White, and Color Grading styles, and fine-tune the parameters.
Detail Processing: Use the “Details” panel for sharpening (use the “Masking” slider with the Option key to view the sharpening range) and noise reduction (the “Reduce Noise” section).

Step 4: Compositing and Retouching with Layers

One of ON1’s core strengths is its powerful layer functionality.

Adding New Layers: Click the “+” icon at the bottom of the “Layers” panel to choose “Add New Blank Layer,” “Duplicate Current Layer,” or “Add New Image Layer” (place another photo).
Blend Modes and Masks: Each layer has independent blend mode and opacity controls. After selecting a layer, use the Brush tool (press B) and set the foreground color to black; painting on the layer mask hides local areas.
Apply adjustments to a specific layer: Make sure the target layer is selected, then make changes in any adjustment panel (such as “Adjustments” or “Color”), and the effect will only be applied to that layer.

Step 5: Save and Export

All edits are non-destructive, and the original file will not be modified.

Save project: After editing, click File > Save or press ⌘Cmd + S to save as a separate “.onphoto” sidecar file containing all editing steps and layer information.
Export photo: Click “Export” in the bottom module tab, or click the “Export” button in the toolbar to open the export panel.
- Location: Set the output folder and file naming rules.
- Format: Choose JPEG, TIFF, PNG, or original DNG.
- Resize: You can set the long edge in pixels or the resolution.
- Sharpening and metadata: Configure output sharpening and whether to include metadata.
After setting everything up, click the “Export” button to start processing.

III. Advanced Tips for Common Features

Quickly compare before and after adjustments: Press ⌘Cmd + B to enter split view (side-by-side comparison), or press (backslash) to toggle the before/after state of a single photo.
Precise local adjustments: When using the brush in “Local Adjustments,” hold the Option key to switch to “Erase” mode and refine mask edges. Use the bracket keys [ and ] to quickly adjust brush size.
Batch sync editing: In the “Browse” module, hold ⌘Cmd to select multiple photos and enter the “Edit” module to make adjustments. When finished, choose “Copy Adjustments” from the menu in the upper-right corner of the “Layers” panel, then return to the “Browse” module, select the other photos, and choose “Paste Adjustments” from the right-click menu or the “Edit” menu.
Create custom presets: After completing color grading in the “Edit” module, click the “New Preset” button at the bottom of the “Presets” panel, check the adjustments you want to save, name and categorize the preset. You can then apply it to other photos with one click.
Use AI Quick Mask for fast masking: In “Local Adjustments,” select the “AI Quick Mask” tool and click on elements such as the sky, people, or background in the photo. The software intelligently recognizes them and generates the corresponding selection mask, greatly improving efficiency.

IV. Common Issues and Solutions

Q1: The software runs slowly or lags.
A1: Make sure GPU acceleration is enabled: go to ON1 Photo RAW MAX 2025 > Preferences > Performance and check “Use GPU for processing.” At the same time, appropriately increase the “Cache Size” (4GB or more is recommended) and clear cache files (click “Clear Cache” in the same location).

Q2: After applying a preset or adjustment, the photo doesn’t update in real time.
A2: First, check whether the “Real-time Preview” button in the upper right corner of the adjustment panel is lit up (blue means enabled). If it is already enabled and there is still no response, try clicking the “Refresh Preview” button in the toolbar, or press the shortcut ⌘Cmd + R.

Q3: The colors of exported photos don’t match the in-app preview.
A3: This is usually a color management issue. Please confirm: 1) That no incorrect printer profile is enabled under View > Proof Colors. 2) That the color space is set correctly in the “Color” section of the export panel (usually sRGB for web, Adobe RGB or ProPhoto RGB for professional printing). 3) That your monitor has been calibrated.

Q4: How do I restore the original area that was cropped out?
A4: Select the “Crop” tool (C), right-click on the canvas, and choose “Clear Crop” to restore it. Alternatively, find the corresponding “Crop” adjustment layer in the “Layers” panel and delete it or click the eye icon to hide it.

V. Keyboard Shortcuts Summary (Mac Version)

Function	Shortcut	Applicable Module
Import Photos	⌘Cmd + I	Browse
Full-screen Preview	Spacebar	Browse/Edit
Enter/Exit Edit Module	Double-click / Esc	Browse ↔ Edit
Toggle Before/After		Edit
Split View Comparison	⌘Cmd + B	Edit
Refresh Preview	⌘Cmd + R	Edit
Save Project	⌘Cmd + S	Global
Copy	⌘Cmd + C	Global
Paste	⌘Cmd + V	Global
New Layer	⌘Cmd + Shift + N	Edit (Layers)
Brush Tool	B	Edit (Local Adjustments)
Graduated Filter Tool	G	Edit (Local Adjustments)
Crop Tool	C	Edit
Spot Healing Tool	Q	Edit
Zoom In/Out	⌘Cmd + +/- or ⌘Cmd + Mouse Scroll	Edit/Browse
100% View	⌘Cmd + 0	Edit/Browse
Fit to Screen	⌘Cmd + 1	Edit/Browse
Rotate Counterclockwise/Clockwise	⌘Cmd + [ / ⌘Cmd + ]	Browse
Rate Photo (1-5 Stars)	Number Keys 1-5	Browse
Show/Hide Right Panel	F8	Global
Show/Hide Left Panel	F7	Global
Show/Hide Bottom Filmstrip	F6	Global

Through the detailed explanation above, you should now have a comprehensive grasp of the core operations and efficient workflows of ON1 Photo RAW MAX 2025.2 for Mac. Its integrated design reduces the hassle of switching between different software, while the powerful non-destructive editing and layer system offer unlimited possibilities for creative expression.