First, the iPad only recognizes the photos on a card, not the card or card reader itself.
When you plug the adapter with the card, photo starts and shows the pictures. That's all. Just make sure you have a DICM folder on the card.
Some multiple format reader adapters don't work because they require power from the USB port. The iPad is not giving power, it needs it. The card reader I have came in the package with a memory stick pro card. It looks like a typical flash key.
I guess?! I don't think this make sense lol someone has to come in here and clear this out.
But you are carrying them in your iPad photo's you just can't transfer it to pc directly. It happened to me already. A folder of pics in the iPad got lost upon syncing. Good thing I have it burned to a CD .
The Sony format is called Memory Stick Pro. It is smaller than an SD.Ihave recently purchased a sony cybershot DSC TX7 camera, the sony memory card is smaller than an SD card and does not work in the ipad camera connector, we have tried it!! also I have not as yet been able to download videos from the normal SD card from my panasonic camera, It is easy to download photo's though. but I have been told by a computer expert that the videos from the cameras need to have the format changed to play them on the ipad, i am still searching for a suitable programme to convert the videos. hope this helps.