What is an intervalometer?
A fancy name for an interval timer or time lapse timer. A normal self-timer will take a single photograph after a set period of time – usually 2 or 10 seconds. But what if you want to take a photo once every 5 minutes or once every hour? This is where interval timers come in handy. They are useful for taking photos of things which change over time, such as flowers opening up or the sun setting in the sky. On some cameras you can also combine the intervalometer with multiple exposures so you can take a single-frame photo showing the moon rising in the sky or the progress of a solar eclipse. Only one EOS film camera shipped with a built-in intervalometer – the EOS 10/10s. However, you could add a Technical Back E to an EOS 600 series camera or the the Command Back E1 to an EOS 1, 1N or 1NRS. You can also buy an external intervalometer, the rather expensive Canon TC-80N3 (see above). This handheld device is compatible with all EOS cameras which use the N3 connector for remote shutter rele
