Yes drag and drop.
Why would you want to do that ? :|

Some people like to put the pictures back on the camera as a portable way to show people pictures.
Just make sure you keep the same folder structure, and I wouldn't put any edited on the camera just in case it case it confused the camera and corrupted the memory card.
Some people like to put the pictures back on the camera as a portable way to show people pictures.
Just make sure you keep the same folder structure, and I wouldn't put any edited on the camera just in case it case it confused the camera and corrupted the memory card.
No! edited jpg's are no different to any other jpg's, they won,t confuse the camera or corrupt the memory card.
as mentioned, the directory structure IS important, if the jpg's are not in the correct folder, the camera may not be able to display them.