The present invention discloses a low-speed shutter photographing method and a photographing apparatus thereof. The low-speed shutter photographing method includes the steps of continuously collecting image data in an imaging process, storing the image data in a buffering module, and adjusting a collection rate according to a surplus space of the buffering module; Continuously generating an image according to the image data; And displaying the image on a viewfinder. Therefore, it is possible to maximize the processing capability of the photographing apparatus and to prevent the collection speed from being too fast to cause data loss, while at the same time improving the real-time characteristic of displaying the exposure effect and improving the user experience. By allowing the user to select a plurality of photographs having different exposure effects on the viewfinder after the end of exposure, the user can obtain a plurality of photographs having various photographing effects through only one photographing operation, .
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