Stacking photographs made from a locked off tripod over a given duration is not a new technique, and has been commonly used for creating star trail images where single super long exposures can be troublesome, but this application of the process is particularly interesting and beautiful.

An extension of timelapse photography, the Time Stack technique’s goal is to show the passing of time in a single photograph, rather than through a moving video.  In this video tutorial, Canadian photographer Matt Malloy guides us through the creation process.

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