Hi Penguin, I'm shooting almost the same genre as you but since you are on a tight budget with only 1.5k to spare, this is what I'll recommend. Basically, all cameras of any brands are capable of producing good results, thus it is more of how much better you want things to go. Results are also very dependable on the man behind the camera
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Brand new kit:
1000D, 500D, D3000, D5000 or equivalent with 18-55mm kit lens plus Raynox 250DCR
Good and sturdy ballhead tripod which can extend at least up to your shoulder level.
Reason for this setup is easy, the camera bodies which is recommended to you is mainly entry level bodies of at least 10MP resolution. Their sensor is of 1.5x crop for Nikon and 1.6x crop for Canon which gives you the extra reach for macro, not to worry about skylines and landscape yet. Most important, price is definatly within your budget.
The lens which I recommend is an IS lens from Canon or a VR lens from Nikkor. 18mm is for you to cover landscapes and skylines, though the body has a crop factor but you can also do a panaroma shot and stitch them to form a full landscape. 50-55mm will enable you to do portraits when you desire to, most importantly is that this reach will be suitable for macro and closeups when you stack raynox 250DCR on it. Downside of using raynox is that the minimum focusing distance will be greatly shorten and you need some patience to understand how it works as depth of field can be quite shallow at wider apertures, thus causing Out of Focus shots.
How to know if the lens can stack raynox? Simple. Make sure that the diameter of the lens is between 52mm to 67mm and you'll have no problems. Remember not to confuse focal length mm with diameter mm. Focal length mm is the viewing range of the lens, while diameter mm is the size of the thread at the front element where it lets the lens cover sits in.
Hope my explaination helps a little.