When you render an animation, motion blur gives the effect of movement by blurring objects in the scene. For more information
            on motion blur, see Focus and blur.
         
          
            Maya software rendering specifics
            
 
            Only Maya software supports both 2D and 3D motion blur.
            
 
            To set motion blur, work with the settings in the  section of the Render Settings window. 
            
 
            Note 
                  You may not need to adjust quality settings for an entire scene. Adjusting settings on a per-object basis is often faster
                     and has less of an impact on rendering speed. 
                  
 
                
             
          
            General motion blur and Maya Software rendering limitations
            
 
               - Motion blur does not work with software particles. 
- When you have a light illuminating a moving object, the object’s shadow does not blur correctly (use mental ray rendering
                  instead).
               
- When you have a moving spot light that illuminates a surface, the spot light’s beam moving across the surface does not blur
                  (use mental ray rendering instead).
               
- Motion blur is not rendered in raytraced reflections and refractions.
 
          
            Maya hardware rendering specifics
            
 
            Supports only 3D motion blur. 
            
 
            To set motion blur, work with the settings  section of the Render Settings window.