Radiance Tech Tip 16
Widescreen without an anamorphic lens
Introduction
The Radiance can be used to simplify aspect ratio control for a system, which uses a 16:9
projector to display an image on a 2.35 screen, without an anamorphic lens.
We will setup the input aspect ratio buttons, on the Lumagen remote, to control the aspect
ratio of the projected image. The projector is left in its default 16:9 mode. The input aspect
ratio buttons on the Lumagen remote are used to set the aspect ratio.
Fixed Zoom Method
The zoom setting on a 16:9 projector is adjusted so that the image fills the width of a 2.35
screen. The non-active image spills over the top and bottom of the screen. The projector
zoom is fixed at this setting. If you are using a 1080p projector, 1080p 2.35 letterboxed
video sources are not scaled. i.e. When you play a Bluray 2.35 movie, the Radiance scalier is
turned off and the image is displayed at a 1:1 ratio. The 4:3 and 16:9 images are scaled
down to fit inside the height of the screen. This is referred to as a "constant image height"
system.
Figure 1, 16:9 projector with fixed zoom used on a 2.35 screen
4:3
The non-active image spills over the top and bottom of the screen and
wide black bars are added on both sides by the Radiance.
16:9
The non-active image spills over the top and bottom of the screen and
narrow black bars are added on both sides by the Radiance.
2.35
The non-active image spills over the top and bottom of the screen and
wide black bars are added on both sides by the Radiance.
Procedure
This is the procedure to configure the Radiance for a system that includes a 16:9 projector
and a 2.35 screen. This procedure requires software rev 011812 or higher and assumes that
you are starting with factory default settings. To do a factory reset press "MENU 0999" and
then press "MENU, Save, OK, OK, OK".
1. Set the output aspect ratio by pressing "MENU, Output, Styles, [Style], Aspect Ratio, OK,
Single output aspect, OK, 235, OK".
© 2016 Lumagen, Inc.
1
Radiance Tech Tip 16, Rev 2.0
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