Intervalometer

An intervalometer (also called an interval timer ) is a device for the precise emission of pulses after a certain time interval. It is distantly related to the time switch known from everyday life / household .

photography

An intervalometer with the setting ${\displaystyle \Delta t=5\,\mathrm {s} }$

An intervalometer gives the camera the impulse and the information to trigger the exposure. With most devices, a delay and parameters such as exposure time , time interval and the final number of shots can be set in advance. The greatest advantage of intervalometers is that they work independently according to the settings made, which means that the photographer no longer has to release the shutter manually and the camera continues to run until the desired number of images is reached or the technology ( memory card or battery ) fails. Intervalometers are mainly used for recording time-lapse sequences . Intervalometers are extremely important, especially for time-lapse recordings in combination with long exposures , as the camera's shutter release has to be pressed for longer periods of time, which would lead to blurring of the image if operated manually. In addition to the exposure time, the time interval between the shots can also be set as desired, i.e. the photographer can specify, for example , to document passing clouds or to capture changing weather conditions as a time lapse . Since it has to be taken into account that at least 24 individual images per second are necessary in order to obtain a fluid movement in the video sequence, a corresponding number of recordings are necessary for a longer sequence. ${\displaystyle \Delta t}$ ${\displaystyle \Delta t=5\,\mathrm {s} }$ ${\displaystyle \Delta t=10\,\mathrm {min} }$

Individual evidence

1. ↑ What is an intervalometer digital-photography-school.com (English) April 1, 2015
2. ↑ Use of intervalometers in photography. prophoto-online.de April 1, 2015
3. ↑ Possibilities with different intervalometers. learntimelapse.com April 1, 2015