Schneider's unique variable iris feature enables you to
easily achieve the optimal screen illumination for any
format, without having to adjust lamp currents or focus
when switching between formats. This makes the new
Cinelux Première the ideal lens for multiplex cinemas
constructed for constant-width images, as it enables
projectionists to quickly and easily make aperture
adjustments when switching to and from the Cinemascope
format, to maintain the desired 16 footlamberts of
brightness no matter what the format. As the
illumination of xenon projection bulbs reduce with age,
Cinelux Première allows you to compensate by simply
adjusting the lens aperture to maintain the optimal
light level.
In small
rooms, such as screening rooms or smaller multiplex
auditoriums, you can improve depth of focus and achieve
perfectly uniform illumination simply by reducing the
lens aperture. Cinelux Première variable iris may be
adjusted from the maximum aperture of f1.7 to a minimum
of f4.0.
Schneider's Aspheric Lens Design Produces
Superior Images
The image produced by a spherical glass element can be
compromised. This is because the light rays that enter
the element from the object (film) side do not all come
into common focus on the image (screen) side of the
glass element. The glass near the edges of the lens
refracts light rays, bringing them into focus closer to
the glass element, while the unrefracted light rays
passing through the center of the lens come into focus
further away from the glass element. This phenomenon is
known as "spherical aberration."