Photos imported from card have horizontal redlines not present i camera or when imported to
iphoto, What's the probllem?
Can you post a screenshot?
This is most likely a corrupted file, causing the RAW image to be corrupted. It often happens that the JPG preview in the same file is not corrupted, this is why iPhoto or the camera itself doesn't show the problem, they show the embedded JPG and not the RAW. The corruption is always caused by a hardware malfunction, it could be the camera card itself, the transfer hardware, the computer hard disk or the computer memory. You need to try importhing the photo again using different hardware to see if you can isolate the problem.