Several of the Sony cameras require a high speed memory stick for 640 x 480 30fps movies.
Here is a clipping from the Sony P150 specifications:
"MPEG VX Fine with Audio (640 x 480 at 30fps),
(MPEG VX Fine requires Memory Stick PRO media)"
I have a sony dsc p150 ,7 megapixel camera it came with a 32mb memory stick , I want to be able to record high quality movies , but not sure what memory stick to buy as there seem to be several types memory stick duo , memory stick pro etc I want the type that will give the best picture quality and longest recording time .Thanks