With modern cameras being so dependent on batteries I always have a set of spares. Hate buying those $10 batteries, but it beats the alternative!

Also tend to agree with Bob on the 2 camera theory. I carry my "good" camera and also a compact one just in case. Not too bad lugging stuff around as I use a LowePro fanny pack case when out shooting. Have a big case in the car with more camera equipment but the fanny pack has been a great addition. Carries the 2 cameras, many extra rolls of film and batteries.

[This message has been edited by Dave H (edited 02-28-99).]