In 1981, Sony released a camera called the Mavica, which saved pictures to a floppy disc instead of traditional film. Although rare, these photographs may still be found occasionally today and are associated with .411 files.
A file with the .411 file extension is known as a Sony Mavica picture.
A file with the .411 file extension is a thumbnail or small version of Mavica photographs. The file is used by the Mavica disc to display the photographs.
You are most likely to find a .411 file either on a floppy disc using a disc reader or burned onto a CD that was made as a duplicate of a floppy disc. On the original floppy discs, these files may be hidden from view.
Normally, .411 files are saved with .htm files that contain the actual photographs taken with a Sony Mavica camera.
411 files can be viewed with the programs XnView, Javica and Maview.