Lore

Tilt-Shift Blur to Mask Low-Resolution AI Backgrounds

Overview

Using Photoshop's Blur Gallery – Tilt-Shift filter to hide quality weaknesses (low resolution, messy detail) in an AI-generated background, by exploiting the fact that a background is often already meant to be out of focus behind a subject.

How

  1. Stamp/merge visible layers (Ctrl/Cmd+Alt+Shift+E) into a new layer, then Convert for Smart Filters so the blur stays non-destructive and editable later.
  2. Filter > Blur Gallery > Tilt-Shift: position the solid in-focus band around the subject; drag the dashed lines out over the background.
  3. Set blur amount (~40px) — enough to obscure the AI background's low resolution without looking artificial.

Why it works

Rather than fighting a Generative Fill limitation (whole-background generation is currently low quality) head-on, this leans into an existing property of the source photo — it was already slightly out of focus — turning one limitation into cover for another instead of trying to eliminate it. Part of the broader Generative Fill Background Compositing Workflow.

Related

Generative Fill Background Compositing Workflow, Camera Raw Grain to Unify AI Composite Texture