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Vertigo
Vertigo
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The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The darkfdark-frame is (depending on the camera manufacturer) also used to identify and map out any hot pixels during the exposure.

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The darkf-frame is (depending on the camera manufacturer) used to identify and map out any hot pixels during the exposure.

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The dark-frame is (depending on the camera manufacturer) also used to identify and map out any hot pixels during the exposure.

Added Hot-Pixel explanation
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Vertigo
Vertigo
  • 1.5k
  • 12
  • 18

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The darkf-frame is (depending on the camera manufacturer) used to identify and map out any hot pixels during the exposure.

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.

The darkf-frame is (depending on the camera manufacturer) used to identify and map out any hot pixels during the exposure.

Source Link
Vertigo
Vertigo
  • 1.5k
  • 12
  • 18

The long exposure Noise Reduction takes a "dark frame" after the real shot, and then uses the noise pattern from that image to reduce the noise generated by the sensor. That's why the exposure takes twice as long as this NR were disabled.

Long time exposure can increase the sensor temperature, and increased temperature also means more noise. So you should generally leave that feature on, and disable only if time is a critical issue.