If you own an iPad and a DSLR, it's likely that you have already sprung for Apple's camera connection kit. And if your camera uses compact flash cards, then it is equally likely you own a card reader.
PCMCIA is also known as Card Bus afaik. The only place I have seen them is on Laptops and PCI cards for computers.<BR><BR>If you have a memory card from a camera, it is probaly Compact Flash, so a USB ...