Installing And Adjusting The Cinewide Anamorphic Lens - Runco RS-900 Owner's Operating Manual

Installation
3.11
Installing and
Adjusting the
CineWide Anamorphic
Lens
If you are installing a CineWide-equipped projector, proceed as follows to install and
adjust the anamorphic lens.
It is extremely important that the primary lens is properly
Note
adjusted before you install the anamorphic lens. Ensure that
the image from the primary lens is perfectly centered on the
screen.
Runco offers two types of anamorphic lenses for its CineWide projectors: prismatic and
cylindrical.
• The prismatic lens compresses the height of the image (as opposed to stretching the
width) to achieve a 2.35:1 aspect ratio with a 1.78:1 display device.
• The cylindrical anamorphic lens has a larger aperture than the prismatic lens. It
stretches the width of the image to achieve a 2.35:1 aspect ratio with a 1.78:1 display
device. Two, cylindrical anamorphic lens options are available: Rainier II and McKinley.
Although they differ in size and throw distance range (refer to Table 3-3), the installation
procedure for both lenses is similar.
The RS-900/CineWide is available with either a prismatic or a cylindrical anamorphic lens;
the RS-900/CineWide with AutoScope always uses a cylindrical lens.
If you are installing an RS-900/CineWide with a prismatic lens, refer to Anamorphic Lens
Installation and Adjustment - RS-900/CineWide (Whitney Lens) on page 42. If you
are installing an RS-900/CineWide with a cylindrical lens or an RS-900/CineWide with
AutoScope, continue with the next section.
36 Runco RS-900 Owner's Operating Manual