Source: Love Mac | Software download link: Blur n Bokeh for Mac

Blur n Bokeh is a professional-grade image processing software designed specifically for macOS, whose core function is to simulate high-quality, realistic lens blur and bokeh effects. It goes beyond simple Gaussian blur by providing photographers and designers with the ability to create convincing shallow depth-of-field effects in post-processing through precise control over parameters such as the focal plane, aperture shape, and bokeh characteristics.

I. Detailed Overview of the Core Interface and Workspace

The interface design of Blur n Bokeh is intuitive and is mainly divided into five core areas:

Top Menu Bar and Toolbar: Includes file operations (open, save), editing commands, view controls, and quick-access tools (such as Brush, Gradient, and Magic Wand).
Left Tool Panel: Provides the core tools for selecting and drawing focus areas.
- Brush Tool: Used to manually draw sharp (in-focus) areas.
- Gradient Tool: Creates blur effects with linear transitions.
- Magic Wand/Smart Selection Tool: Quickly selects areas based on color or contrast.
- Eraser Tool: Corrects the selection.
Central Image View Area: The main workspace, displaying the blur effect in real time. Supports zooming (Cmd++/Cmd+-) and hand panning (hold the spacebar and drag).
Right-Side Parameter Adjustment Panel: The core control area of the software, containing multiple tabs:
- Blur: Controls the blur intensity (radius) and type (such as glow, motion blur).
- Bokeh: Adjusts the shape, brightness, color, and rotation of highlight bokeh spots, which is key to creating an artistic feel.
- Depth: View and edit the grayscale-based depth map (white represents sharp, black represents blurred).
- Lens: Simulates lens optical characteristics, such as chromatic aberration, vignetting, and sharpening.
- Effects: Adds post-processing effects such as grain and glare.
Bottom Status Bar and Preview Controls: Displays operation hints and provides quick toggling of the “before/after comparison view” (press the B key) and the “depth map view” (press the D key).

II. Complete Workflow: From Project Creation to Export

Step 1: Create/Open a Project

Method: After launching the software, click the menu bar “File” > “Open…” or use the shortcut Cmd + O, then select a JPEG, TIFF, or RAW image from Finder. The software will automatically create a new project based on that image.

Step 2: Define the Focus and Blur Areas (Create a Depth Map)

This is the most critical step. The goal is to tell the software which parts of the image should be sharp and which should be blurred.

Select the brush tool on the left (or press the B key).
In the “Depth” tab of the right panel, make sure “Draw Sharp” (paint the sharp area) mode is selected.
Paint over the main subject of the image (such as a person’s face) to make it white (which indicates sharpness in the depth map).
Switch to “Draw Blur” (paint the blur area) mode and paint the background area black.
Use the Gradient tool (G) to create a natural transition zone between the foreground and background.
Tip: Use the [ and ] keys to quickly adjust the brush size; hold the Option key to temporarily switch to the eraser.

Step 3: Adjust the Blur and Bokeh Effects

Switch to the “Blur” tab and adjust the “Radius” slider to control the overall blur strength.
In the “Bokeh” tab:
- Adjust “Brightness” to control the brightness of the highlight bokeh.
- Use the “Blade” slider to change the number of aperture blades and shape the bokeh (such as hexagonal or circular).
- Enable “Chromatic Aberration” to add subtle color fringing to the edges of light spots, enhancing realism.

Step 4: Fine-Tune and Add Lens Effects

In the “Lens” tab, you can add “Vignetting” to further emphasize the subject. In the “Effects” tab, you can add a small amount of “Grain” to help the composite blend more naturally with the original image.

Step 5: Export the Final Image

Click the menu bar “File” > “Export…” or use the shortcut Cmd + E. In the dialog that appears:

Choose the export format (e.g., JPEG, PNG, TIFF).
Set the image quality and resolution.
Specify the save path and click “Save” to finish.

Before exporting, it is highly recommended to press B to compare before and after, ensuring you are satisfied with the result.

III. Advanced Tips for Common Features

Fine-Tune with Depth Maps: In the “Depth” panel, use the “Blur Transition” and “Depth Map Contrast” sliders to refine the edges and transitions of the blur area, avoiding harsh cutoffs.
Selective Color Protection: At the bottom of the “Blur” tab, enable the “Protect Colors” feature to prevent colors in the blurred area from over-blending and appearing muddy.
Motion Blur Simulation: In addition to circular blur, selecting “Motion” in the “Blur” type allows you to simulate the dynamic blur effect produced by fast-moving objects or panning camera shots.
Batch Processing: Via the menu bar “File” > “Batch Process…”, you can apply the same blur preset to a group of images, greatly improving work efficiency.

IV. Common Issues and Solutions

Issue: Edge transitions look unnatural, with obvious smudging artifacts.

Solution: Check the depth map and use a soft brush (adjust brush hardness) to repaint the edges. Use the “Soften Depth Map” feature in the “Depth” panel for smoothing.
Issue: Highlight bokeh looks fake or is not prominent enough.

Solution: Ensure the original image has sufficiently bright highlights (e.g., lights, water droplet reflections). Significantly increase the “Brightness” and “Threshold” values in the “Bokeh” tab.
Issue: The software responds slowly when processing large images.

Solution: Lower the preview resolution in the bottom-left corner of the viewport (e.g., from “Full” to “1/2”) while editing; the software will render at full resolution upon final export.
Issue: Want to undo multiple steps after a mistaken operation.

Solution: The standard macOS multi-step undo shortcut Cmd + Option + Z usually works in this software, and you can also find “Step Backward” in the “Edit” menu.

V. Blur n Bokeh for Mac Keyboard Shortcuts Summary

Function Category	Action	Shortcut (Mac)
File Operations	Open File	`Cmd + O`
Save Project	`Cmd + S`
Export Image	`Cmd + E`
Close Window	`Cmd + W`
Editing & View	Undo	`Cmd + Z`
Redo / Multi-step Undo	`Cmd + Shift + Z` / `Cmd + Option + Z`
Toggle Before/After Comparison	`B`
Toggle Depth Map View	`D`
Zoom In/Out View	`Cmd ++` / `Cmd + -`
Tool Selection	Brush Tool	`B`
Gradient Tool	`G`
Magic Wand / Smart Selection Tool	`W`
Eraser Tool	`E`
Hand Tool (Temporary)	Hold Spacebar and drag
Brush Controls	Increase Brush Size	`]`
Decrease Brush Size	`[`
Temporarily Switch to Eraser	Hold the `Option` key

Note: This guide is based on the typical interface and features of Blur n Bokeh; minor differences may exist between versions. It is recommended to explore the software’s built-in Help menu during actual use.