I think I'll take your advice. I've been noticing that my exposures have been kinda off since I've been using my camera's metering the last few years. Before that I used to use an incident meter and my exposures were usually right on, plus I'd bracket +/-1 stop. I think the Zone system isn't for my style of shooting, but reading the AA books has helped me previsualize more before shooting. Thanks to everyone for their answers.