Normally I consider Christmas lights something better to look at than to photograph, but thought I'd try a few shots tonight. Any thoughts on best exposure techinque? [The decorations at the Chicago Botanic Garden are particularly nice this year. I think it would look best in most cases just showing the bright lights, and not much of the surrounding buildings or things partially illuminated by the lights. So, basically thousands of little points of light on the bushes. Bush's thousand points of light?]