Lomography Redscale XR 50-200 is a color negative film that has been given the "redscale" treatment. Essentially, this involves flipping the film over so that when it is exposed in camera light hits the base layer side of the film first instead of the emulsion side. This results in images that have a heavy red-orange color cast to them, akin to having used a red filter on the lens. Depending on how the film is rated and exposed (between ISO 50-200) the strength of the yellow/orange/red cast can be varied. It is a fun and experimental film perfectly for creating images with a very different look and feel to them.
A sample gallery of Lomography Redscale XR 50-200 film shot through a Rolleiflex 2.8E2 camera by staff member Zeb Andrews. The bulk of this roll was metered at ISO 100-200.