concept image; impression photograph
A photograph used to convey a mood, concept, or general impression rather than a literal depiction. Common in advertising, design, and editorial contexts.
This advertisement uses a concept image.
It took time to choose a concept image for the article.
Compound of イメージ (image, concept) and 写真 (photograph). The exact origin is uncertain, but it likely arose from advertising and publishing needs for evocative photography.