The next “Midcentury Stereopanorama” takes place at Brooklyn Film Camera on Dec. 6. Attendance is limited to 12 guests.

In the mid-19th century, photographs with ghostlike figures became collectible amusements thanks to the invention of the stereoscope – a device that created three-dimensional optical illusions.

Stereoscope cards contain two pictures of the same scene, photographed from slightly different angles. A viewer selects a card, inserts it and then presses the instrument to their face.