Time-Lapse Photography - Frame-by-Frame Stop Motion: The Guide to Non-Traditional Animation Techniques - page 53

day, so one movie is the evolution of that day compressed into a short 6
minute sequence. He then places all of the movies for each day of the year
next to each other in a grid formation synchronized to the second, and it is
easy to see the changing patterns of light and weather over a year and how
the ebb and flow of these patterns work. It is both scientific and aesthetic in
nature.
“I've found that A History of the Sky elicits a wide range of emotional
responses in viewers. By presenting a visual representation of an entire
year in just a few minutes, one gets the sense of the fleeting nature of
time, which can have a powerful emotional impact.”
Ken Murphy
The Intervalometer
The only way to observe the natural evolution and timing of any event is
to record that event at an even rate or interval of shooting. In pixilation,
the camera operator can shoot frames at random times, depending on
what is going on between frames. Pure time-lapse filming must be shot
at equal intervals, so the regular or irregular timing of an event can be
observed. This can be a tedious shooting process unless the shutter of
the camera is hooked up to a clock that releases the shutter at a particular
rate. This clock is called the intervalometer . Some digital still cameras,
Fig 4.2 a remote shutter release that has an intervalometer option.