The Polaroid 20×24 camera is a very large instant camera made by Polaroid, with film plates that measure 20 by 24 inches (51 cm × 61 cm), although at least one camera takes pictures that are 23 by 36 inches (58 cm × 91 cm).
It is one of the largest format cameras currently in common use, and can be hired from Polaroid agents in various countries.
Photographers such as Elsa Dorfman and Timothy Greenfield-Sanders, have used this heavy (235 lb or 107 kg), wheeled-chassis camera.
To celebrate Lady Gaga's new role as Creative Director of Polaroid, a portrait of her was shot with the 20×24 camera.
References
Polaroid 20×24 camera Wikipedia(Text) CC BY-SA