Nikon D3X D3X User's Manual - Page 326

Long Exp. NR (Long Exposure Noise Reduction) Choose whether to reduce noise in pictures taken at slow shutter speeds. Option Description Photographs taken at shutter speeds slower than 8s are processed to reduce noise. While photographs are being SHOOT CUSTOM processed, "l m" will blink in the shutter speed/aperture displays for a period of time On approximately equal to the current shutter speed. In continuous release mode, frame rates will slow and the capacity of the memory buffer will drop. Photographs can not be taken until processing is complete and "l m" has cleared from the displays. Noise reduction will not be performed if the camera is turned off before processing is complete. Off (default) Long exposure noise reduction off. High ISO NR Photographs taken at high ISO sensitivities can be processed to reduce "noise." Option Description S High Noise reduction is performed at ISO sensitivities of T Normal (default) ISO 500 and higher. While photographs are being processed, the capacity of the memory buffer will drop. U Low Choose the amount of noise reduction performed from [High], [Normal], and [Low]. Noise reduction is only performed at sensitivities of U Off Hi 0.3 and higher. The amount of noise reduction is less than the amount performed when [Low] is selected for [High ISO NR]. 300