Hi Mike,
Welcome to CiC.
You have not done to badly. A little sharpening in ViewNX2 will make a difference.
I guess the humidity in San Diego is a little high. You should not expect to get clear shots in high humidity, that hazy look is part of your environment.
Phil Page (dubaiphil) is a master of cityscapes at night, you should follow his posts and look at his images. You got to remember Phil is shooting in an environment with very little humidity.
Camera settings: Learn to use your camera on full Auto. Look at the EXIF of each shot and see what the camera has decided to do in each shot. Then change to Aperture priority and see how the camera handles that. Shutter speed priority will be next and then you start experimenting with Manual mode.
Learn how to use WB, contrast and saturation – in camera- to your advantage. Read the instruction manual a few times as you go along experimenting with different settings.
Go to different reviews on your camera.
http://www.imaging-resource.com/PROD...kon-d7100A.HTM
http://www.dpreview.com/reviews/nikon-d7100/
These links will take you to helpful reviews that will help you beter understand your camera.
It is a matter of learning how to use your camera and experiment with settings until you get the images looking like you want it to look like. The next step is enhancing your images in post camera software.
It is a long journey and lots of experimenting, reading and practice will result in beter understanding your camera and refining your camera technique.
Enjoy it and enjoy all the the “arguments” here at CiC. You will learn lots and lots right here at CiC.
