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<blockquote data-quote="Horoscope Fish" data-source="post: 141416" data-attributes="member: 13090"><p>I've played around with this setting a bit because I like doing night photography quite a bit. The Long Exposure Noise Reduction function kicks in when exposure time exceeds 8 seconds, when enabled, and affects&nbsp; all both RAW file and JPEG images alike because it works by shooting the same frame twice. The second shot is taken with shutter closed and the in-camera software then combines the images. Through a subtractive process the second shot is used as a template, if you will, to remove &quot;noise&quot; from the first. In my experience it works very well but you have to be shooting some insanely long exposures (as in &quot;measured in minutes&quot;) at really high ISO's (I'll stick my neck out and say above 1600ISO) to see any practical application. Unless your camera sensor has some hot pixels, which this would also correct. I guess I'd say the NR function is a good thing to have, I mean, I'm glad it's there, even if it really has what I see as being a very limited range of practical use.</p></blockquote><p></p>

[QUOTE="Horoscope Fish, post: 141416, member: 13090"] I've played around with this setting a bit because I like doing night photography quite a bit. The Long Exposure Noise Reduction function kicks in when exposure time exceeds 8 seconds, when enabled, and affects all both RAW file and JPEG images alike because it works by shooting the same frame twice. The second shot is taken with shutter closed and the in-camera software then combines the images. Through a subtractive process the second shot is used as a template, if you will, to remove "noise" from the first. In my experience it works very well but you have to be shooting some insanely long exposures (as in "measured in minutes") at really high ISO's (I'll stick my neck out and say above 1600ISO) to see any practical application. Unless your camera sensor has some hot pixels, which this would also correct. I guess I'd say the NR function is a good thing to have, I mean, I'm glad it's there, even if it really has what I see as being a very limited range of practical use. [/QUOTE]

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