#1. "RE: How much better a shoot with MLU?? since D50 dont h" In response to Reply # 0
For moon shots the mirror lock up shouldnt make any difference as shutter speed is reltively high. Mirror lock up isn't really needed unless you are using long telephoto or macro lenses and doing exposures between 1/60 - 1/2 seconds, slower shutter time kills the mirror vibration and faster shutter times are not that sensitive to vibrations.
#2. "RE: How much better a shoot with MLU?? since D50 dont h" In response to Reply # 1
Don't get me started on the lack of mirror lock up. If you do a lot of macro like me mirror lock up is an essential. Whilst I like my D50 very much, had I read the spec fully I would probably bought a Canon instead. Dear Nikon: The mirror on the D50 can be locked up to clean the sensor so why not embed it in the menu. Come on Nikon people, it's just a few lines of code in the firmware, Don't make me buy a 350D now.
#3. "RE: How much better a shoot with MLU?? since D50 dont h" In response to Reply # 0
Rancho Cordova, US
Mirror lock up helps with longer shutter speeds (say 1/60s to 1/2s) with longer lenses, mostly for macrophotography - though I suppose it is possible so see some improvement in nonmacrophoto applications.
With the moon, I doubt that MLU would help: the moon is not a stationary object.