The history of Cinemascope
maintaining and aligning the projectors was no problem at all.
This video explains how other manufacturers handle cinemascope but more importantly shows the various benefits of Barco Residential’s approach to projecting cinemascope content. At the end of the clip we present our CinemaScope models..
An externally mounted lens slides in front of the projector (and back out of the way when not needed) The projector must vertically stretch the image and thereafter the lens will optically stretch the image horizontally to fill the screen. This system is complex, time consuming to install and has potential mechanical drift issues.
Using memory zoom results in a disruptive experience as multiple user interactions are required.
The projector must zoom the image out to fill the screen whilst adjusting focus and shift. This approach is slow, taking up to 20 seconds before the image is displayed correctly.
The premise of the memory zoom option is that the projector needs a zoom range that can accommodate a 16:9 film and then a 2.39:1 movie by zooming the image as far as the edges of the black bars.
2. The image quality will be negatively impacted when using an anamorphic lens by such things as chromatic aberration, pincushion distortion, focus uniformity and a softening of the image.
3. Finally it’s worth noting that a 2.39:1 image will be 32% less bright then an image in 16:9 when using memory zoom. Compare this to the Barco Residential approach which offers Constant Light Output and which, for the installer, means: no extra lenses, no fuss and no need for repeat calibration checks.
The CinemaScope series projectors have a unique automatic aspect ratio detection function. It will detect the content aspect ratio and automatically scale the image to fit the required resolution in this case 5120 x 2160 and of course change back to 16:9 (3840x2160) if you have content in that format. Where required, clients can manually override the auto aspect detection/switching system and recall a specific, or custom format of their choosing.