Currently Being ModeratedJan 29, 2013 5:15 AM (in response to domengland)
You can recover the files from the card using an app like MediaRecover
Never let your computer erase data without you first checking that the data is safe. Specifically never use iPhoto (or any other app) to delete the photos from your Camera Card. Disconnect the camera, check the transfer has gone correctly and then use your Camera to Reformat the Card. This has three advantages:
1. You know your data is safe - because you've taken the time to check it.
2. Reformatting the card is much, much faster - takes a couple of seconds
3. Reformatting also refreshes the Directory Structure on the Card, helping prevent issues with the card and prolonging its life.