Last name of the photographer who created plant cyanotypes using Prussian blue.

Last name of the photographer who created plant cyanotypes using Prussian blue.

• A. Adams
• B. Atkins
• C. Cartier-Bresson
• D. Newton

Answer: (B)

Plant cyanotypes using Prussian blue rely on the cyanotype process, an early photographic method that yields blue-toned images. In this process, a light-sensitive iron-based solution is coated on paper, plant material is placed on it, and exposed to sunlight; the exposed areas turn a deep Prussian blue, creating a silhouette of the plant against the blue background. Anna Atkins used this exact method to document algae and other plants, publishing botanical cyanotypes in the 1840s and earning recognition as a pioneer in botanical photography. That historical association is why Atkins is the correct last name. The other photographers are known for different genres—landscape, street/photojournalism, or fashion—so they don’t fit this specific plant-focused cyanotype context.