According to Fuji specs:  at highest rez (3 MPixel Fine)- 12@(16 Mb); 
50@ (64 mB) and 102@(128Mb).  The capacity doubles for the 3Megapixel, 
Normal compression mode.

Al D wrote:
> I have a Fuji Finepix 3800 camera with 16mb xD picture card for memory.
> I've read this only stores about 12 pictures.  I'm planning on a trip to
> Baltimore and I want to upgrade my memory card.  About how many pictures can
> be stored on a 128 mb memory card?  ...on a 256 mb memory card?  I want to
> take lots of pictures of Washington DC and Baltimore while keeping them on 1
> memory card until I arrive home.
> 
>