#1. "RE: How to do long exposure with ML-L3 remote" In response to In response to 0
You are correct you need to shoot in M mode.
Then set the shutter speed to Time indicated by -- in the LCD. You start the exposure by pressing the button on the remote and the exposure ends on the next push of the remote button. See the manual page 73 for Long Time Exposures.
I hope this helps.
Dave Summers Lowden, Iowa Nikonians Photo Contest Director
Nikonians membership - "My most important photographic investment, after the camera"