I am surprised to find that all the pictures taking by a Nikon D40x, and subsequently a Canon Ixus 860, cannot be read when I insert the same SD card into my Nikon D90. Would have thought that all the pictures on the same card should be read despite the camera body. The D90 says "No files in Folders" and the full capacity of the card is available.
Can anyone shed some light? Much appreciated.