Conclusions
Effect of Profession Keywords
actress and model are effective for “drawing out beautiful faces.” The reason is unclear, but a tendency for faces to become more glamorous with actress/model was observed. If you don’t need a specific facial direction, a woman is sufficient.
Effect of the Opening Line in the Cafe Prompt
| Word | Necessity | Reason |
|---|
A candid ... snapshot | Unnecessary | No notable change in composition or mood when removed. Scene description tags are sufficient |
iPhone | Unnecessary | No difference observed when removed |
an actress | Effective | Controls the direction of facial glamour. a woman also works |
in her everyday life | Unnecessary | Duplicates subsequent scene descriptions. Can be deleted to save tokens |
Recommended Prompt (Shortened Version)
1girl, 22yo japanese actress, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
Removing the opening line (A candid iPhone snapshot of an actress in her everyday life) entirely shows no notable quality change, because the scene description tags sufficiently define the composition, lighting, and atmosphere. What primarily affects quality in this prompt is the scene description tags and the facial direction control via actress.
The ultimate cafe prompt contains the opening line A candid iPhone snapshot of an actress in her everyday life. Does “an actress” in this line actually contribute to facial beauty? What happens if you change it to another profession?
And are words like iPhone and in her everyday life necessary?
We tested with 36 images total.
Experiment 1: Face Differences by Profession
Generating 3 images each for 7 professions (+ no profession) using the same prompt structure, and comparing facial tendencies.
Common prompt structure:
A candid snapshot of [PROFESSION] in her everyday life. 1girl, 20yo japanese woman, small cafe window seat, beige oversized knit sweater, sitting, looking out window
actress
model
nurse
teacher
student
woman (no profession)
office worker
Experiment 1 Analysis
Looking at facial tendencies by profession keyword:
- actress / model: More polished, “photogenic” faces tend to appear. Makeup tends to shift toward the glamorous direction
- nurse / teacher / office worker: Tend toward more natural, approachable faces. “Everyday” feel increases
- student: Slightly younger impression. Fresh atmosphere
- woman: Most neutral. Doesn’t lean in any particular direction
Conclusion: Profession keywords influence the “direction” of the face. A tendency for faces to become more glamorous with actress and model was observed. If you want a beautiful face, actress or model is an effective technique.
Experiment 2: Testing Unnecessary Words in the Cafe Prompt
Removing each word one at a time from the ultimate cafe snapshot prompt and checking for changes.
A: Full Version (Baseline)
A candid iPhone snapshot of an actress in her everyday life. 1girl, 22yo japanese woman, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
B: “iPhone” Removed
A candid snapshot of an actress in her everyday life. 1girl, 22yo japanese woman, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
C: “actress” → “woman”
A candid iPhone snapshot of a woman in her everyday life. 1girl, 22yo japanese woman, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
D: “in her everyday life” Removed
A candid iPhone snapshot of an actress. 1girl, 22yo japanese woman, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
E: Opening Line Fully Removed
1girl, 22yo japanese woman, small cafe window seat, natural overcast daylight through glass, beige oversized knit sweater, sitting, looking out window, gentle natural expression.
Experiment 2 Analysis
| Variation | Change |
|---|
| A: Full version | Baseline |
| B: iPhone removed | No notable difference. Composition, lighting, and depth of field are all comparable to group A |
| C: actress→woman | Facial glamour is more subdued. Consistent with Experiment 1 results |
| D: everyday life removed | Almost no change. “Everyday” is sufficiently expressed by subsequent scene descriptions |
| E: Opening line fully removed | No major difference from group A. The subsequent scene description tags sufficiently define composition and atmosphere |
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