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Nikon DSLR Cameras
D3100
Editing RAW Images
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<blockquote data-quote="PaulPosition" data-source="post: 371544" data-attributes="member: 25700"><p>Long Exposure Noise Reduction, also called Dark Frame Subtraction, works by taking a second exposure of the same length but with the curtain closed. The idea is that the same pixels in the sensor will overheat and produce noise for the same exposure parameters. Which the camera software then averages with neighboring pixels.</p><p></p><p>If you're doing lots of similar exposures you can turn the function off and create your own 'dark frame' (same speed, keep the cap on the lens) which you could then use in post-process.</p></blockquote><p></p>
[QUOTE="PaulPosition, post: 371544, member: 25700"] Long Exposure Noise Reduction, also called Dark Frame Subtraction, works by taking a second exposure of the same length but with the curtain closed. The idea is that the same pixels in the sensor will overheat and produce noise for the same exposure parameters. Which the camera software then averages with neighboring pixels. If you're doing lots of similar exposures you can turn the function off and create your own 'dark frame' (same speed, keep the cap on the lens) which you could then use in post-process. [/QUOTE]
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Nikon DSLR Cameras
D3100
Editing RAW Images
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