In traditional photography, "depth of field" (DOF) refers to the distance between the nearest and farthest objects in a scene that appear acceptably sharp. Professional photographers use expensive lenses with wide apertures (like f/1.4 or f/1.8) to create a 'shallow' depth of field, rendering the subject crystal clear while melting the background into a soft blur (often called bokeh).
Why Blur the Background?
A blurred background is one of the most effective ways to direct a viewer's eye. By intentionally blurring out distracting elements—such as a crowded street behind a portrait, or a messy desk behind a webcam capture—you instantly elevate the visual quality of the image and force the viewer to look exactly where you want them to: the main subject.
Manual Blur vs. AI Selection
While some tools use AI to automatically detect subjects, they frequently fail on complex edges like frizzy hair or transparent glasses. By using our manual blur brush, you retain total artistic control. You can carefully outline your subject and manually blend the transitions to create a much more natural-looking depth falloff.