This method of shutter speed measurement is more closely tied to the photography world, but some digital film/video cameras can measure shutter in this way as well. So, a shutter speed of 1/48th means that the shutter is open for one forty-eighth of a second. The difference between shutter angle and shutter speed is that the latter is a measurement of how long the shutter is open per second. This will create motion blur.Īn illustration of shutter angle as it relates to shutter speed via .Ī different way of measuring the amount of time the recording medium is exposed to light is called shutter speed. As a result, the shutter angle is the amount of time that the film/sensor will “see” the motion for that particular frame. The higher the shutter angle, the longer the amount of time the film/sensor is exposed to light as the shutter spins. Picture the shutter as a 360-degree circle with the shutter angle representing a slice of pizza taken out of it. Shutter angle is the method of measuring the amount of time the sensor or film emulsion is exposed to the light that is creating the images that you see per frame. Motion blur as it relates to film and video is a result of shutter angle or shutter speed. What led to the idea of motion blur? Or the need for it? As a result, we can create motion blur based on our own parameters that we set between keyframes, and we can alter those parameters however we want on a composition-by-composition basis. In the opening title sequence animated by Saul Bass above (perhaps one of the greatest motion designers of all time), you can see that there is no motion blur on the movement.Īside from the fact that motion design was done frame-by-frame with cartoon-style animation and a physical camera capturing each image, we now have the ability to use keyframes to create motion without ever touching a physical element by hand. Title sequence from It’s a Mad Mad Mad Mad Mad World by the legendary Saul Bass.įrom a motion design perspective, it’s interesting to think about how the art form began and how it has changed.
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