It all depends if you're going to stich or not. If you are, Simon_P gave great advice. An exposure 'trick' is to take measurements 90 degrees away from the sun (i.e. having the sun at your left or right) take a note of the measurements, then switch to manual everything set your camera per the noted measurements and shoot your panorama.

What camera do you use? I'm currently working on a mount specifically for the Nikon D70 and have my mockup ready in 3D Studio:

If want to create perfect stitches you''re gonna need something like this because of the nodal point of your lens.

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