Negative pulldown
2-perf
### 2\-perf

2\-perf camera systems use 2 perforations per frame on 35 mm film with an aspect ratio close to 2\.39:1; the aspect ratio used in [anamorphic](/wiki/Anamorphic "Anamorphic") prints. It was first proposed conceptually around 1930, but was not put into practice until 1961, when [Techniscope](/wiki/Techniscope "Techniscope") was developed at [Technicolor](/wiki/Technicolor "Technicolor")'s Italian branch. It has recently been brought up again with the advent of higher quality, lower grain [film stocks](/wiki/Film_stock "Film stock") as well as [digital intermediate](/wiki/Digital_intermediate "Digital intermediate") post\-production methods which eliminate optical blowups and thus improve quality. While in the recent past, some companies have offered custom conversions of camera equipment to 2\-perf, it appears that camera manufacturers are now poised to support the format. [Arri](/wiki/Arri "Arri") made 2\-perf movement blocks for their [Arricam](/wiki/Arricam "Arricam") and [Arriflex 235](/wiki/Arriflex_235 "Arriflex 235") cameras available for rental in March 2007\.Arri advertisement, *British Cinematographer*, March 2007, p. 2\. [Aaton](/wiki/Aaton "Aaton")'s [Penelope](/wiki/Aaton_Penelope "Aaton Penelope") camera, released in October 2008, was the first camera specifically designed for 2\-perf usage (as well as 3\-perf).


Where was Techniscope developed?