153iPhotographs taken at slow shutter speeds are automatically pro-cessed to reduce “noise” (bright spots, randomly-spaced brightpixels, or fog), slightly increasing recording times. Selecting Onincreases the amount of noise reduction performed at shutterspeeds slower than 1 s and increases the time required to recordimages by roughly 1.5 to 2 times. During processing, a warningwill be displayed and pictures can not be taken (if the camera isturned off before processing is complete, the picture will besaved but noise reduction will not be performed). In continuousrelease mode, frame rates will slow and while photographs arebeing processed, the capacity of the memory buffer will drop.Choose On to use optical vibration reduction with compatible1 NIKKOR lenses.Long Exposure NROptical VRA Vibration ReductionWhen the camera is panned, vibration reduction applies only to motionthat is not part of the pan (if the camera is panned horizontally, forexample, vibration reduction will be applied only to vertical shake),making it much easier to pan the camera smoothly in a wide arc. Thecomposition may appear to change after the shutter is released, butthis does not indicate a malfunction.A Optical VRIf the lens supports both normal and active vibration reduction, select-ing On will enable active vibration, reducing both the relatively mildcamera shake that occurs when the photographer is stationary and thestrong camera shake associated with shooting from a moving vehicleor while walking.