I'm hoping someone here can answer this question. This happened to me in 2006 and then again last month. I shot some pictures and reviewed them on the computer. They were fine. Now there is nothing but black images. Both on the computer and on the SD card. Different cameras, though both Canon. Shot in RAW.. Other images shot on the same card are fine. I don't understand how they could simply disappear on all media and all copies. The histogram for the pictures is just a few lines, so I don't think there is any way to recover the images. No, I haven't been smoking funny cigarettes.