The first emphasized contrast and change, with many out-of-focus and unusual shots. Although this approach stressed technique over content, it never degenerated into the prosaic and workmanlike. The second part was characterized by "Chiufen," a photo essay of a declining country town. Cheng's purpose seemed to be merely to record reality and there was little reflection or attempt to penetrate the subject matter.
一組是注重變形、反比、失焦或異象圖案的「光影系列」，它們在民國五十四年左右出現，還頂具「現代感」的，雖然技術層面的表現與造型的趣味，強過內涵的思考，但並不流於平庸與匠氣。