>aay, > >Yeah, it is strange. My experience is the same as yours. It >even looks like LENR wasn't turned on, which is why I >questioned if the dark frame was actually taken. > >I wouldn't be so hasty to blame the camera until operator >error has been ruled out To know the camera has the LENR >feature is one thing, to understand you have to wait (perhaps >16 minutes as Gromit44 pointed out) to turn the camera off is >another. > >RTFM is something we rarely do as a shoot is in progress, >especially in the dark. If this was the 1st time the OP used >the feature it's quite understandable how the camera could be >shut off prematurely. > >
>>At this time, based on all the reading I've done on the >subject, I am forced >>to use Long Exposure NR which doubles the exposure time. >This is unfortunate >>as it leads to fewer opportunities to take a shot you >want. >> >>Also, I think the only way out of this (if you realize >that your Long Exposure >>won't exposure the way you want) is to switch off the >camera (and maybe even >>take the battery out) and then switch it back on. > >You don't have to give up opportunities to take the shots you >want. You can just turn off LENR and postpone taking the dark >frame shot(s) until AFTER you've taken all your photographs. >You can then subtract dark frames manually during >post-processing instead of letting LENR do it in-camera. This >is quite common in astrophotography circles. You can probably >find much more info on the subject at Nikonians >Astrophotography forum, but here's a couple links to give an >idea...... > >http://darkclearskies.blogspot.com/2012/02/why-subtract-dark-frames.html >http://en.wikipedia.org/wiki/Dark-frame_subtraction > > >ckhuu, > >Given the above, it may not be too late for you rescue your >photos in post. I'd check with the folks in the >Astrophotography forum to see what your chances of success are >at taking a dark frame at this late date. > >If you have Capture NX2, you might want to try the Astro NR >feature in the Develop section. It's not the same as using >LENR in-camera, but it's fast & easy and worth a try. > >Regards, >Frank thank you so much Frank, that's enlightening as it is the first i am using this LENR feature and may not be doing it right.