Cenomorph Prismatic is based on the achromatic prisms and the speherical focus corrector. This lens model has two knobs on top to control the expansion ratio, which can steplessly adjusted from the pass thru mde up to 2.40:1 Cinemascope format.
In order to control the aspect ratio, the lens has adjustable terminal stops for both 16:9 and 2.40:1 modes. This greatly helps to match accurately the different screens and projector setups in the initial setting up. Once the setup has been done, the mode switching will be quick and precise to perform.