At last! here are some pics that I promised to upload. After lots of trials, this is the outcome!. Shooting with tripod, with ND filter is important and one useful feature I found in this camera is the night scenery option under the SCN (scenery) mode which helped a bit. Also shooting early morning or later in the afternoon seem to important. Unfortunately, all these are shot around mid-day at which time the ND filter couldn't effect the shutter speed at all unlike at other times of the day!. Appreciate your insights and suggestions.
Thanks
Slbi