[ GLOSSARY DEFINITION ]
Camera
Bokeh
The pleasing blur behind a subject in portraits, produced by wide apertures or software.
Also known as:
Portrait Mode
Background Blur
Full Definition & Technical Explanation
Bokeh is the aesthetic background blur that isolates subjects. Phones fake it in Portrait mode using depth data — see Camera features: Bokeh mode and DxOMark Bokeh: 170.
Optical bokeh comes from wide apertures and telephoto. Software blur quality varies by edge detection.
Related Technical Terms
Aperture
The lens opening size (f/1.6, f/2.2); lower f-number lets in more light.
Camera
NPU
A dedicated AI accelerator for photo, voice, and on-device machine learning.
Performance
Telephoto Lens
A long-focal-length lens for close-up zoom shots without digital cropping.
Camera
ToF Sensor
A depth sensor that measures distance to subjects, improving AR and portrait effects.
Camera