Shallow focus
浅景深 · 背景虚化 · shallow depth of field
What it is
Only the subject is sharp; foreground and background blur.
When to use it
Focus on the person, emotion, isolation.
When not to
When foreground and background both matter.
Often confused with
- Deep focus
Deep focus keeps everything sharp.
Common generation mistakes
SymptomThe background stays sharp.
FixState shallow depth of field with a strongly blurred background.
Combinations Rolin checks
- Auto-fixed
Shallow focus or bokeh needs a wide aperture (f/2.8 or wider)
Rolin will: set aperture to f/2.8