SNAPSHOT_CANDID · 失败美学伪手机日记

date: 2026-04-30T12:33:00.000Z
result: partial
prompt:
  id: null
  text: >
    Phone diary aesthetic · slight handheld tilt 7° off-axis · imperfect crop with subject offset
    from center · casual snapshot framing as if grabbed mid-moment · cheap-camera color grading
    (slight green cast, mild oversharpening, mild compression artifacts). Composition feels
    accidental · not posed. Deliberately rough · unpolished is the point.


    Subject: A young woman sitting alone at a corner window seat in a small neighborhood cafe,
    holding a paper coffee cup with both hands, gazing out at rain-streaked glass. Soft afternoon
    light from the window catches her face from the side. She wears an oversized cream knit sweater.
    Her hair is pulled into a casual low bun with several strands escaping near her ears. Hand-held
    jitter feel · slight motion blur on the cup.


    Layout: subject is offset to the right of frame center (not rule-of-thirds composition · just
    genuinely off). Frame is tilted 7° clockwise from horizontal. Phone-camera grain visible.
    Reflections in the glass are slightly out of focus. The cafe interior is visible but blurred —
    wooden table edge in the foreground, blurred bokeh of cafe lights behind.


    Color: Dim warm tungsten interior tones with cool blue rain-light through window. Slight green
    cast from cheap phone sensor. Saturation pulled down · contrast boosted slightly · highlights
    blown out near the window.


    NEVER include: professional · cinematic · polished · editorial · studio · well-composed ·
    centered · balanced · high-quality · pristine · sharp · model · shoot · portrait.
refs: []
provider:
  id: gpt_image_2
  relay: apimart
  config:
    aspect_ratio: '4:5'
    size: '4:5'
    'n': 1
output:
  path: ./snapshot_candid_v1.png
  bytes: 2447294
  wall_seconds: 38.6
  task_id: task_01KQFJFPJ2YMVCC6BM7JNYPST9
script: experiments/snapshot_candid_test/test_snapshot_candid.py
cost_yuan: 0.5
failure_modes:
  - tilt anchor not honored · output frame is ~1° not the requested 5-15°
  - no visible compression artifacts / oversharpening / green cast despite explicit prompt
  - lighting reads as 'soft cinematic' not 'cheap phone sensor'
  - model prior for polished portrait dominated the failure-aesthetic anchors
notes: |
  First canonical sample for SNAPSHOT_CANDID signature (4th of 4 signatures).
  Captured the cafe context · low-key tungsten + cool blue color contrast · offset
  composition. But the model's polish prior pulled output toward cinematic portrait
  instead of true phone-diary failure aesthetic.

  Hypothesis for v2 (if attempted): text-anchor alone is insufficient to defeat
  gpt-image-2's polish prior. Future iterations may need:
  - reference image of an actual phone snapshot (visual anchor for lo-fi style)
  - post-process tilt + compression in ffmpeg / ImageMagick after generation
  - or accept the model has a polish ceiling here · use a different model
    (e.g. SDXL with a lo-fi LoRA)

  Documented in signatures/snapshot_candid/README.md §Limitations of v1 sample.