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The common 1/100 inch COC limit has been applied to blur other than mis-focus blur. For example, Edward John Wall, in his 1889 A Dictionary of Photography for the Amateur and Professional Photographer, says:
To find how quickly a shutter must act to take an object in motion that there may be a circle of confusion less than 1/100in. in diameter, divide the distance of the object by 100 times the focus of the lens, and divide the rapidity of motion of object in inches per second by the results, when you have the longest duration of exposure in fraction of a second.