Gordon Laing wrote:
Yes, a smaller aperture will mean a smaller DOF, but since most city skylines are distant, this won't be an issue.
But if you need a bigger DOF, then by all means, close the aperture down to a bigger f-number and increase the exposure until you get the result you want.
If you close down a lot though, you may need more than 30 seconds, which would necessitate a cable release as most DSLRs only offer programmable shutters up to 30 secs.
Thanks for the great post Gordon. very informative. One hint that may help is that if you don't have a cable release, you can set your camera to a small delay before it takes the shot. At least this way, you can move your hand off the camera before the shutter opens. Not sure if this is useful or somebody has already mentioned it but I thought it was worth mentioning. Keep up the great job.