Lepic is best known for his technical experiments in printmaking. He developed a method called variable etching, where he manipulated the ink on the plate during the printing process. This technique allowed him to create different moods and weather conditions from a single etched image. His paintings frequently depicted the coast at Berck, where he observed the daily labour of local fishermen. He used muted tones and loose brushwork to capture the specific light of the English Channel.

Modern collectors are drawn to Lepic for his honest depictions of the sea and his innovative approach to texture. His prints avoid the bright colours of later Impressionism, opting instead for a grey and silver palette. These works provide a sense of quiet observation. His focus on maritime life and coastal weather makes his art a natural fit for contemporary interiors.