"Perhaps you are putting up a building and want to capture the
action, at a regular time over the next few months. You could use
an inexpensive point and click digital camera and an old laptop to
capture a photo every day at 10 AM. The individual photos could be
used to create a video or slide show documentary of the work.
"Sure. you could use a $40 USB Webcam to grab those pictures,
but you won't get the detail or have any flexibility to change the
ISO, aperture, or shutter speed, to compensate for different
"gPhoto along with cron is easy to use and offers a lot of
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