The Horizon Perfekt is a Russian camera, made in China, and sold by Lomography. It is in a class of cameras called swing-lens cameras. This camera takes a 120º pano with a 28mm lens by rotating a slit from left-to-right. The film itself, ordinary 35mm film, is held in an arc so that the lens is equidistant to the film plane during the full image capture.
I was inspired to purchase this camera by the work of Jeff Bridges (yes, the actor, son of Loyd Bridges the star of Sea Hunt) who uses a vintage camera called a Widelux. Jeff Bridges uses his to document the making of his movies. I was looking to purchase a Widelux, but they are expensive and due to their age, prone to need custom repair. The Horizon Perfekt was $349 through the Lomo site and comes with a 2-year warranty.
Development notes: Arista Premium 400 treated as if identical to Kodak TriX 400. Developed in Clayton Chemicals F76+ (1+9), 7:15min @68º. This was an experiment to increase the development time to bring out a little more contrast than my previous TriX negs. I will keep this new time, especially for overcast soft lighting. Agitation first 30 sec, then 2 turns per minute. Your mileage may vary.