Overlooking downtown, is a great view from the 29th floor of the Dynetech Centre. This marvelous building is a mix of business and home to 164 luxury apartments.
After some experimentation, what worked for me best was a f10 stop with a few seconds of exposure time.
I also learned first hand, that cheap $35 tripods are not adequate enough for the weight of a DSLR. The Nikon D90 is 1.5 lbs, and the Nikkor 18-200mm lens is 1.2 lbs so the camera ends up being roughly 3 lbs. A cheap tripod you pick up at your local mega retail store is fine for maybe a pocket size point & shoot or perhaps even for your kids to use around the house for setting a repel tower for their GI Joes.
My style is to shoot low, so I’ve never extend the tripod to clear a guard rail before. Atop a 29 story building, the wind adds a new ingredient to the challenge of getting a concise clear shot that a small aperture and longer shutter speed. These tripods simply are not made to handle the weight of the camera, it nearly felt like it was going to fall over with the extended weight of the lens and was excessively wobbly. The only successful shots were from collapsing the tripod and mounting it on a portion of the roof that had a deep low wall top.
Taking it all into consideration, it does not make sense to use a cheap $35 tripod with a $2500 camera. It is no different than buying a fantastic $1500 lens and defeating how awesome it is by using a cheap $20 filter. Lesson learned.
Nikon D90, Nikkor 18-200mm VR2