交換重曝是一種兩人交換已拍攝底片的活動。透過交換，底片經由重複曝光使同一張底片出現兩個人所攝之重疊影像。交換重曝這種新近的網路及人際互動現象，說明了傳統的攝影方式與底片使用在攝影數位化的浪潮中並未消逝。 近來底片攝影與玩具相機的興起，使研究者觀察到現今的交換重曝攝影蘊含著情感與趣味的分享。從文獻探討過程發現，參與交換重曝的動機與目的來自於遊戲的樂趣，且交換重曝是一種特殊的人際互動過程，交換過程中因缺乏交換雙方的溝通與交流，竟產生人際傳播間類同「噪音」現象所致的「影像醬」。 本研究經由問卷調查與深度訪談，從參與交換重曝活動者所發佈分享影像的情形，了解交換重曝一般行為。其次，分析沖洗完成的底片所帶來的出乎意料的影像驚喜元素，以探察交換重曝活動在攝影數位化時代中新的影像敘事方法。 本研究結果歸納如下：交換重曝結合了遊戲與生活，開創新的人際交流與互動。交換重曝的影像由出乎意料的內涵與驚喜元素，描繪影像的故事場景，帶來的窺視感內含多種可能，建立陌生文化的交集並型塑影像自我敘事。 / “Filmswap” is an activity that two people take photos and exchange their own films and then take photos again. By exchanging films, two different images will overlap and simultaneously be developed at one film through double exposure. The arising of “Filmswap” as a new way of communication reflects that analog photography has not disappeared in digital trends. Recently, analog photography and toy cameras have become popular. One important fact needs to be discovered that analog photography is related to emotion and fun sharing. As revealed in literature review, the motivation and purpose of Filmswap come from the playfulness of playing games. The process of Filmswap is actually a kind of particular interpersonal interaction: Filmswap brings “photo jam” instead of “noise” due to the lack of adequate communication between people. In this study, I use in‐depth interviews and questionnaire surveys to collect the on-line information of displaying photos from the people doing Filmswap and to generalize the elements of surprise in Filmswap. Through the research and the understanding of the context from Filmswap players, this study tries to construct a new method of photo narrative in digital era. There are three conclusions of this research can be addressed as follow: First of all, Filmswap combines play and daily life. Secondly, Filmswap brings a new way of interpersonal interaction. Moreover, those unexpected and surprising image elements depict stories of those Filmswap images and create new ways of photo narratives.