<P> Time - lapse can be achieved with some normal movie cameras by simply shooting individual frames manually . But greater accuracy in time - increments and consistency in exposure rates of successive frames are better achieved through a device that connects to the camera's shutter system (camera design permitting) called an intervalometer . The intervalometer regulates the motion of the camera according to a specific interval of time between frames . Today, many consumer grade digital cameras, including even some point - and - shoot cameras have hardware or software intervalometers available . Some intervalometers can be connected to motion control systems that move the camera on any number of axes as the time - lapse photography is achieved, creating tilts, pans, tracks, and trucking shots when the movie is played at normal frame rate . Ron Fricke is the primary developer of such systems, which can be seen in his short film Chronos (1985) and his feature films Baraka (1992, released to video in 2001) and Samsara (2011). </P> <P> As mentioned above, in addition to modifying the speed of the camera, it is important to consider the relationship between the frame interval and the exposure time . This relationship controls the amount of motion blur present in each frame and is, in principle, exactly the same as adjusting the shutter angle on a movie camera . This is known as "dragging the shutter". </P> <P> A film camera normally records images at twenty four frames per second . During each 1 / 24th of a second, the film is actually exposed to light for roughly half the time . The rest of the time, it is hidden behind the shutter . Thus exposure time for motion picture film is normally calculated to be one 48th of a second (1 / 48 second, often rounded to 1 / 50 second). Adjusting the shutter angle on a film camera (if its design allows), can add or reduce the amount of motion blur by changing the amount of time that the film frame is actually exposed to light . </P> <P> In time - lapse photography, the camera records images at a specific slow interval such as one frame every thirty seconds (1 / 30 frame / s). The shutter will be open for some portion of that time . In short exposure time - lapse the film is exposed to light for a normal exposure time over an abnormal frame interval . For example, the camera will be set up to expose a frame for 1 / 50th of a second every 30 seconds . Such a setup will create the effect of an extremely tight shutter angle giving the resulting film a stop - animation or claymation quality . </P>

What is time lapse interval in mobile camera