Sorry I am a bit dumb at this. I received a Lexar 133x speed l G card for the little pocket Canon I received for Christmas. (I had to switch to Canon for this one because I wanted mini compact and a Viewfinder). What exactly does the high speed do? Is it worth getting one for my S5200? The only thing I do not like with my S5200 is the lag time between photos. Does this card help that or is it just for speed to load the photos to computer. and how many G can I go with on the S5200 please? Sorry - but we have to learn somewhere!!! Thanks anyone.