Günter Fruhtrunk
Günter Fruhtrunk (Germany, 1923–1982) was a German painter and printmaker associated with Op Art and Constructivism. His work is characterized by dynamic geometric patterns and vibrant color contrasts, exploring movement and spatial tension. Fruhtrunk's artistic style significantly influenced post-war European abstraction, and he also taught at the Munich Academy of Fine Arts.

Artwork by Ellsworth Kelly
What is Hard Edge Art?
Hard Edge art is a style of abstract painting that became popular in the 1960s. It features areas of color separated by crisp, sharp edges that are painted with geometric precision. The term hard-edge painting was coined by art critic Jules Langsner to describe this approach, which contrasts with the softer, more fluid forms of other abstract styles.