motion_blur

#Introduction# What is motion blur?

In traditional motion picture photography the shutter is a rotating disc with an opening the size of a given angle. Movements during the shutter open time will blur the exposed image. Motion blur shutter times are specified with values ranging from 0.00 to 1.00.

#Motion Blur Settings# Properties > Render > Motion Blur

Motion Blur, enable/disable
Motion Segments, amount of additional motion snapshots taken during shutter open time. The blurring effect will be a continuous straight movement between the snapshots. Values higher than one allow smoother and very fast rounded motion in the blurred effect. A value of two will create a total of three motion snapshots with two linear segments between them during the shutter's open time.
Shutter Open, when to open shutter for the beginning of the first motion segment in a frame's duration.
Shutter Close, determines when the last motion segment ends during a frame's duration.
Shutter Open Speed, softness of the shutter opening where a value above zero fades the beginning of motion blur. You can think of this as the location in the frame where the shutter stops opening.
Shutter Close Speed, hardness of the closing shutter where a value below one fades the end of motion blur effect. You can think of this as the location in the frame where the shutter begins to close.

Helpful Tip: Real cameras do not have shutters that open and close instantly, so for a realistic motion blur the open speed and close speed parameters should be used.