Normally, once formatted the images will be totally wiped. It could be possible to recover them using specialist equipment, but it would be very expensive to use & no guarantee of success. Some of the better data recovery programmes might be worth a try, especially if the card hasn’t been over-written.
Hi Naja. When you format a card – the first letter only in the file name is deleted. The images are still on the card – so as long as you don’t add anymore they are 100% recoverable.
There are many free undelete / unerase programs if you google them.