Anamorphic front attachment lens by Isco Göttingen that converts spherical lenses into CinemaScope optics with 2:1 squeeze.
Technical Details
The classic Iscorama models 36 and 54 operate with a horizontal compression of 2x at minimum focus distances of 1.5m and 0.9m respectively. The Iscorama 36 weighs 2.1kg and has a front diameter of 95mm, while the more compact model 54 comes in at 1.8kg with an 86mm diameter. Both systems function as front-mounted adapters for standard photo lenses with focal lengths between 35mm and 85mm. The optical construction consists of prismatic elements that compress the incoming light horizontally without affecting the vertical image axis. Unlike other anamorphic systems, Iscorama adapters only require focusing on the base lens (Single Focus).
History & Development
In 1961, Isco Optic, under the direction of Pierre Angénieux, developed the first Iscorama as a cost-effective alternative to the expensive anamorphic lenses from Panavision and Bausch & Lomb. Mass production began in 1964 with the model 36, followed in 1967 by the more compact model 54. By 1982, Isco had produced approximately 3,000 units of both variants. After the bankruptcy of Isco Optic in 1982, the German company Schneider-Kreuznach acquired the rights but ceased production in 1985. Today, original Iscorama adapters are considered coveted collector's items, with prices ranging from 8,000 to 25,000 Euros.
Practical Use in Film
Iscorama adapters were primarily used in European low-budget productions of the 1960s and 70s, including films by Jean-Luc Godard ("Pierrot le fou," 1965) and Sergio Leone. The characteristic horizontal lens flares and slight softness at the image edges defined the look of many French New Wave films. Modern filmmakers like J.J. Abrams utilize vintage Iscorama systems for a nostalgic aesthetic. The workflow requires 2x de-squeezing in post-production and special viewfinders for on-set image control.
Comparison & Alternatives
Iscorama differs from fixed-built anamorphic lenses like the Panavision Ultra Vista through its flexibility in using various base lenses. Modern alternatives include the SLR Magic Anamorphot series (starting at 1,200 Euros) or the Atlas Orion lenses, which, however, do not reproduce the specific vintage look of the Iscorama. While Panavision systems use 1.3x compression for a 2.40:1 aspect ratio, Iscorama systems exclusively work with 2x compression. For budget productions, modern anamorphic front adapters from Moment or Sirui offer similar effects at a fraction of the cost.