clouds and cameras

i'm into clouds. ko olina had nice ones. my wife gives me the "get away from me you mento" look whenever i notice interesting formations in the sky. the only camera we have is a $50 sanyo. the aperture doesn't adjust at all, it's just 0-infinity everytime. wimpy zoom too and not the widest angle, but it captures moments. i'd like a legit camera to record all the crazy cloud action hawaii has to offer.