Complex sentence: Photogravure practitioners such as Peter Henry Emerson and others brought the art to a very high standard of expression in the late 19th century, which continued with the work of Alfred Stieglitz in the early 20th century, especially in relation to his publication Camera Work.
Split into simpler sentences: Photogravure practitioners such as Peter Henry Emerson and others brought the art to a very high standard of expression in the late 19th century. This continued with the work of Alfred Stieglitz in the early 20th century, especially in relation to his publication Camera Work.