Frequently Asked Questions
Yes, it is normal for some of the images Picture Rescue 2 finds on a card to appear corrupt. In some cases, this is due to the image data actually being corrupt, or simply incomplete. In other cases it is due to the algorithms used by Picture Rescue 2 being imperfect. It is not always easy for Picture Rescue 2 to determine when an image it has found is corrupt - your eye is the best judge of that.
The photos represented by icons like this are most likely ones which are incomplete or corrupt in such a way that Picture Rescue 2 can't tell that they are corrupt. You may be able to view a portion of the image if you recover these files and open them in Photoshop, or similar application.
That depends on what the camera does when it formats a card. Some camera models just create a new file system on the card, and leave the bulk of the card's storage alone. In this case, Picture Rescue 2 can recover at least some of the files. Other camera models, including Fuji and some Olympus models overwrite all the information on the card when formatting. No program, including Picture Rescue 2 will be able to recover files in these cases. The best thing to do is to download Picture Rescue 2 and try it in demo mode (free of charge). If it can find any pictures, it will show you their thumbnails; if not, it won't show you any thumbnails.
When you have a corrupted media card, it can greatly affect the data. Picture Rescue 2 will scan the media card and pull up all the files it can find. Unfortunately Picture Rescue 2 will not repair the files. The corrupted files will be corrupted before the scan and after the scan. We cannot guarantee that you will be able to recover all photos from a corrupted media card.
Try choosing the File > "Look for media cards and cameras" menu item to refresh Picture Rescue 2 list of devices. Make sure your reader device is working by inserting a known good camera card to verify that it can be seen. If that doesn't work, you may try restarting your Macintosh and trying again. If that doesn't work, your card may have physical or electrical damage that prevents it from being read. In this case, Picture Rescue 2 will not be able to recover any pictures from it. Sometimes though a card with a corrupt file system on it can confuse the Macintosh operating system, and prevent applications from reading the card, and even hang the system. A reboot will often clear this situation. If your system becomes hung after plugging a bad camera card into a USB reader device, and you have trouble restarting, you might try removing the reader device altogether to see if that helps.
Many photo files contain a small thumbnail image embedded near their beginning. Chances are that the picture you recovered is corrupt or incomplete somewhere past the end of that embedded thumbnail in the file. When you click on that file in the Finder, it finds the embedded thumbnail and displays it, without looking at the whole file. But when you try to open the file, the full image is needed, and if that isn't present or is corrupt, the open will fail. Unlike Finder, Picture Rescue 2 uses the full-sized image to make its thumbnail, rather than using any embedded thumbnail with a good image, the chances are excellent that the full sized picture will open properly.
USB enabled cameras can be seen by Picture Rescue 2, if they appear to the Macintosh as an ordinary disk drive. Some cameras with a USB interface, especially older models, use a proprietary protocol that requires a program from the manufacturer to communicate with the camera. Picture Rescue 2 cannot see cameras that use a proprietary protocol. If your camera is one of these, you will need to use a separate reader device and plug your camera card into that in order for Picture Rescue 2 to see the card.
No, Picture Rescue 2 can only recover from camera card media. If you are looking to recover data from your hard drive or iPod you should look at Data Rescue.
All digital cameras use some image hardware to generate image data. This data, whose format is specific to the type of image hardware the manufacturer uses, is then processed by firmware in the camera to a standard JPEG format for storage on the camera card. The conversion process loses a tiny amount of image quality, though this loss is usually not noticeable. Some cameras, in particular high-end ones, have an option for saving their raw image data directly, without the processing. The camera manufactures have different names for this mode, often something like "super quality", etc. Picture Rescue 2 recognizes certain of these raw camera formats, and if it finds (or thinks it found) such an image, it will display a Raw icon for the thumbnail. An actual thumbnail is not displayed for these files, because Picture Rescue 2 relies on the Macintosh image libraries to render the image, and these generally do not support raw camera formats. (Special software is generally needed to display raw formats.) That is also probably the reason why your recovered file will not open when you double-click it. If you don't believe that you've taken photos with these super-quality camera settings, then it's possible that Picture Rescue 2 has just made a mistake, and is erroneously interpreting some of the card data as a raw photo.