sunprint; cyanotype print; solar print
A photographic print made by placing objects on light-sensitive paper and exposing it to sunlight, producing a cyan-blue image. Often associated with the cyanotype process.
I made a sunprint for my summer vacation craft project.
Sunprints can be developed using only sunlight, without chemicals.
青写真 originally referred to blueprints (cyanotype copies of architectural plans) and later gained the figurative meaning 'blueprint' or 'plan'. 日光写真 specifically refers to the photographic print made by sunlight exposure, often as a craft or artistic technique, and is not used figuratively.
Compound of 日光 (sunlight) and 写真 (photograph). The term describes a photographic process that uses sunlight to create an image on sensitized paper.