STEP 6:
using the lens
It is possible to use the lens as a fixed or as a variable device. In the fixed setup the lens is kept always at the ‘IN’ position, and the vertical expand for the 2.40:1 material, as well as the horizontal squeeze for the 16:9 material is done electrically by the projector or video processor. In the variable setup the procedure for the 2.40:1 material is the same as with the fixed setup, but is this case the horizontal squeeze is done optically by switching the lens into the ‘OUT’ mode, and no further electrical processing is needed.
maintenance
Only use optically safe lens cleaning solutions and a clean, lint-free cloth for wiping the optics. It is possible to use mild solvent like alcohol to remove dirt or fingerprints. In order to clean the prisms and the front element from both sides, the bottom plate and the front element can be temporarily removed.