A good amount of ambient light helps show off the color. Make sure the backround is a color that will contrast at least a bit against the beer color. Other than that point, focus, click, repeat. The beauty of digital cameras is that you can snap a couple dozen shots and toss the ones you don't like.
Primary: German Hef, Belgian IPA, Scottish 80, Belgian Dubbel
On Tap: Oatmeal Stout, Vanilla Oatmeal Stout, Belgian Dark Strong, Munich Dunkel, Dunkel Weizen, Oktoberfest, Bock, IPA, Black IPA, English IPA, Pale Ale
Using the mind to look for reality is delusion. Using your senses to look for reality is awareness.
"One time I was so desperate for a beer I snuck into the football stadium and ate the dirt under the bleachers." Homer Simpson
Life, Liberty, and the Pursuit of Hoppiness