In intentional camera movement (ICM), a camera is moved during the exposure for a creative or artistic effect. This causes theimage points to move across the recording medium, producing an apparent streaking in the resulting image.

The process involves the selection of an 

• Aperture - usually f8
• Shutter speed - anywhere between 1/2 sec to 2 seconds
• ISO - Depends on brightness of subject, but the slower the better. prferably 100ASA
• Filter - NDeutral Density (ND) enables longer exposure on brightly lit subjects

The direction of movement of the lens has a dramatic effect on the results. Patience is required, along with much experimentation, to establish where and how to move the camera to achieve the desired effect. The camera can be moved upwards, downwards, to the right or left or away from or towards the subject while being handheld. The camera may also be turned, angled, and rapidly moved back and forth.

Leading proponents of the technique include Ernst Haas, Douglas Barkey, Alexey Titarenko and (from as early as 1962) Kōtarō Tanaka.^[7] Rome: Renato Cerisola - 1953-2003 Eni's Way, Giacomo Bucci in 1973 published some laws of motion blur programming.