Aurora HDR 2017 is a professional software on the Mac platform dedicated to high dynamic range (HDR) image creation and editing. Jointly developed by renowned photographer Trey Ratcliff and Skylum, it uses powerful algorithms, an intuitive interface, and a rich set of creative tools to help photographers merge multiple photos with different exposures into stunning works with rich detail and natural color grading, while also providing the ability to apply HDR-style enhancement to a single photo.

I. Detailed Explanation of the Core Interface and Workspace

After launching Aurora HDR 2017, users are presented with a work environment featuring a clear layout and well-defined functional areas.

Top Menu Bar: Includes standard menus such as “File,” “Edit,” “View,” “Window,” and “Help.” All advanced settings and software preferences are located here.
Left Panel:
- Library: Used to browse and select images from local folders, and is the starting point for importing source files.
- Presets: Provides a large number of one-click HDR effect presets, divided into categories such as “Basic,” “Professional,” and “Artistic,” and is the core of quick photo editing.
Central Workspace: The image display and direct editing area. Here you can view before-and-after comparison effects (supporting split-screen, side-by-side, and various other views).
Right Adjustment Panel: The core control area of the software, where all fine-tuning tools are arranged vertically:
- HDR Enhance: Controls the intensity and naturalness of the HDR effect.
- Color Filters: Simulates traditional color glass filters, adjusting hue, saturation, and brightness by zone.
- Tone Mapping: Includes sub-items such as “Smart Tone,” “Contrast,” and “Details” for fine-tuning the light and shadow structure.
- Color: Adjusts overall hue, saturation, brightness, and color balance.
- Details: Sharpening and noise reduction controls.
- Transform: Lens correction, vertical/horizontal adjustment, rotation, and cropping.
- Filters: Add gradients, radial filters, and spot removal.
Bottom Toolbar:
- Contains “Undo/Redo,” “View Toggle,” “Histogram,” “Metadata” display, and the essential “Export” button.

II. Complete Workflow: From Project Creation to Final Export

Step 1: Create/Open a Project

Method 1: Create a New HDR Project

Launch the software, click the menu bar File → New HDR Project, or use the shortcut Cmd + N.
In the file picker that appears, hold down the Cmd key and click to select multiple photos (usually 3-5) shot in the same scene with different exposures (including bracketed exposures) in JPEG or RAW format.
Click “Open,” and the software will automatically load them and begin aligning and merging the images.

Method 2: Open a single image for editing

Click “Library” in the left panel to navigate to the folder containing the image.
Double-click the target image, or drag and drop it into the central workspace.

Step 2: Basic Adjustments and Preset Application

After the image loads, you can first adjust the overall HDR effect intensity using the “HDR Enhance” slider at the top of the right panel to avoid excessive distortion.
Click “Presets” in the left panel to browse categories. Click any preset thumbnail to preview the effect in real time. This is an efficient way to quickly dial in the look.
After selecting a preset, you usually need to go to the right panel for personalized fine-tuning.

Step 3: Fine-Tuning (Core Workspace)

All adjustments are non-destructive and can be modified at any time.

Color Mapping: Expand the “Color Mapping” panel.
- Use “Smart Color” to balance highlights and shadows.
- Adjust “Contrast” and “Black Point” to enhance visual impact.
- Adjust the “Detail” slider to enhance texture, but be careful to avoid halos or noise.
Color Adjustment: Expand the “Color” panel.
- Use the “Color Filter” (located at the top of the “Color” panel) to adjust the saturation, luminance, and hue of specific color ranges in the image (such as the blue of the sky or the yellow of leaves) individually, just like using a physical filter. This is a key tool for achieving precise local color grading.
- Adjust the overall saturation, color temperature, and tint.
Local Adjustments: Click the “Filter” icon (or press Cmd + F) at the top of the right panel.
- Select “Graduated Filter” or “Radial Filter”, drag on the image to create an adjustment area, then independently adjust the exposure, temperature, and other parameters for that area. This is commonly used to darken the sky or brighten the subject.
- Select the “Spot Removal” tool (shortcut J), then click or paint over blemishes in the image (such as sensor dust or passersby) to repair them.

Step 4: Final Optimization and Export

Use the “Compare View” button in the bottom toolbar (or press Cmd + B) to toggle a before-and-after comparison and make sure you are satisfied.
Check the histogram to ensure that pixel information is not heavily concentrated at both ends, which would cause loss of detail.
Click the “Export” button on the right side of the bottom toolbar, or choose the menu File → Export (shortcut Cmd + E).
In the export dialog:
- Set the file format (such as JPEG, TIFF), quality, size, and output directory.
- If you need to keep all adjustment data for future edits, you can check “Save Aurora HDR project file”.
- Click “Export” to complete the entire process.

III. Advanced Tips for Common Features

Batch Processing and Saving Presets: After completing detailed adjustments to a photo, at the top of the right panel, click the adjustment panel menu (three horizontal lines icon) and select “Save User Preset”. You can then apply this preset with one click to other photos from similar scenes, greatly improving batch processing efficiency.
Layer-Like Local Control: By combining the “Gradient Filter” and “Radial Filter”, adding multiple filters and setting their mask ranges and parameters separately, you can achieve layer-like zoned control and create complex light and shadow effects.
Use the histogram for precise exposure: When adjusting “Tone Mapping,” always keep an eye on the histogram brought up from the bottom toolbar, and make sure the peaks are evenly distributed with no “clipping” at either end—this is the foundation for achieving professional-grade color grading.
Simulate HDR from a single photo: Even with just one RAW-format photo, you can create a visual effect with an expanded dynamic range by significantly boosting “Shadows” recovery, lowering “Highlights,” and combining “HDR Enhance” with “Detail” adjustments.

IV. Common Issues and Solutions

Symptom	Possible Cause	Solution
Ghosting (double images) appears in the merged image	Moving objects (such as pedestrians or leaves) were present in the frame during shooting.	In the “HDR Settings” dialog that pops up before merging, check and try different “Deghosting” levels and modes (Auto/Manual).
The final image looks unnatural, with halos or excessive saturation	Sliders such as “HDR Enhance” or “Detail” are over-adjusted.	Follow the principle of “less is more.” Dial back the “HDR Enhance” intensity, and check whether any color in “Color Filter” has had its saturation excessively boosted. Use “Smart Tone” for automatic balancing.
The software runs slowly or lags	Processing ultra-high-resolution RAW files or merging multiple images places high demands on system resources.	Close other large applications; in the software’s “Preferences,” check whether the “Cache” location is on a disk with ample free space; try converting RAW files to DNG format in Adobe Lightroom before importing.
Unable to open images by drag and drop	Software permission issues or unsupported file formats.	Make sure the image format is a supported one such as RAW, JPEG, or TIFF. Go to “System Preferences → Security & Privacy → Privacy → Accessibility” and check whether Aurora HDR has been granted permission.

V. Mac Shortcuts Summary Table

Function	Shortcut	Description
Create New HDR Project	`Cmd + N`	Open the file selector to import multiple bracketed exposure photos
Open Image	`Cmd + O`	Open a single image file
Export Image	`Cmd + E`	Open the export dialog
Undo	`Cmd + Z`	Undo the previous action
Redo	`Cmd + Shift + Z`	Redo the undone action
Toggle Before/After Comparison	`Cmd + B`	Quickly compare the effect before and after adjustments
Spot Removal Tool	`J`	Activate the spot repair brush
Graduated Filter	`G`	Activate the graduated filter tool
Radial Filter	`R`	Activate the radial filter tool
Reset Slider	Double-click any slider	Restore that slider’s value to default
Zoom In/Out View	`Cmd + +` / `Cmd + -`	Scale the image display ratio
Fit to Screen	`Cmd + 0`	Scale the image to fit the window size

Tip: This guide is based on Aurora HDR 2017. Interfaces and features may vary slightly between minor versions; please refer to the software interface you are actually using. By mastering the core workflow and techniques above, you will be able to fully unleash the powerful potential of Aurora HDR in compositing and rendering high dynamic range images.