Most of the photos are bust portraits, taken with a 90mm Elmar lens and designed as reference material for archeologists and anthropologists.
張才大部分是以九十釐米 Elmar 鏡頭攝取了鄒族、排灣族、魯凱族以及泰雅族、雅美族等山胞的正、側面速寫，以做為隨同入山的考古學、人類學專家的資料檔案。