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Ver. 1.0 05042010 

TUNING IN LENS TILT AND SHIFT

   

This is the core step of the setup so please be patient!

 

 

Select  "Lens => Shift" and move the image vertically so that it appears to be vertically centered on the screen.  
The image may still be somewhat cut off by the lens during initial stages. 

 

Loosen the two Lens Adjustment Screws and slide the RSAL3 lens up or down until it does not block the beam.  
Note that this will likely move the image vertically off the screen.  Make sure the Lens Adjustment Screws are 
roughly even in their vertical slot position or the image will show an irregular geometry from right to left. 

Repeat steps until the image is vertically centered on the screen and the beam is passing through the center of 
the RSAL3 lens. 

ADVANCED ADJUSTMENT OPTION

 

It is possible that some residual color separation may exist in the center of the image at the pixel level.  While 
this will be very difficult to see, it is possible to make further adjustments to totally eliminate this at the center of 
the image and to minimize it at the top and bottom of the image.  To do so, it is preferable to have a white grid 
test pattern on a black background.  This test pattern is not available through the projector so an external 
source will be necessary such as an image processor or test pattern DVD.  It is also extremely helpful to be 
familiar with the pixel offset controls of the projector and to use these controls to begin with the best image 
possible.  An experienced installer may choose to apply the following steps in combination with the pixel offset 
controls for the most flexibility. 

 

Loosen the large screws that hold the RSAL3  lens in its bracket so that it is free to tilt.  At this point it will be 
supported by the Fine Tilt Adjustment screw. 

 

Turn the Fine Tilt Adjustment screw in whichever direction is necessary to minimize any residual color separation 
at the center of the image.  Note that this will slightly shift the image in the vertical direction. 

 

Use the remote and select "Lens => Shift" to center the image vertically on the screen.  If the amount of shift is 
significant you may need to loosen the Lens Adjustment screws and slide the lens vertically to center the beam in 
the lens (Note:  this will bring back a slight bit of color separation to the center of the image, but less than existed 
before). 

Repeat steps until the image is vertically centered on the screen and the center of the image is free of any 
color separation then tighten the Lens attachment screws. 

Fine tune the zoom setting to slightly overscan onto the screen border to insure there are no gaps between the 
full projector image and the screen.  Finish by fine tuning the focus. 

PROJECTOR SETTINGS WHEN USING THE RSAL3

 

For 2.35:1 or greater aspect ratio sources:

 

· From the remote, choose 

Menu > Input > V-Stretch > On

   AND   

Menu > Input > Aspect=16:9

.

 

For smaller format sources such as 1.85:1, 16:9 or 4:3 aspect ratios 

 

· From the remote, choose 

Menu > Input > V-Stretch > Off

   AND   

Menu > Input > Aspect=4:3

 

Summary of Contents for RSAL3

Page 1: ...ce customized anamorphic lens system designed specifically for the above ceiling mounted JVC projectors to provide the ultimate in true 2 40 1 cinema immersive theater environments It is designed to be very easy to install and is used with custom JVC projector settings to make home theater projection on a 2 40 1 aspect ratio screen as plug and play as possible ...

Page 2: ...e sure the projector ceiling mount is secure since the anamorphic lens system will add mass to the front of the projector Insert the lens mounting screws into the two holes in the top of the ceiling mounted projector just above the projector lens location Leave at least 1 8 3mm of thread remaining This can be done by hand Make sure the Fine Tilt knob has approximately the same amount of thread sho...

Page 3: ... projector and to use these controls to begin with the best image possible An experienced installer may choose to apply the following steps in combination with the pixel offset controls for the most flexibility Loosen the large screws that hold the RSAL3 lens in its bracket so that it is free to tilt At this point it will be supported by the Fine Tilt Adjustment screw Turn the Fine Tilt Adjustment...

Page 4: ...ojector lens or your RSAL3 lens can produce a measurable reduction in contrast The most effective cleaning approach is to simply blow off any dust If there is any residue or build up then it is recommended that you clean the optics with professional lens cleaning supplies such as from a camera store while the lens is in front of the lit beam of the projector This will allow you to quickly see both...

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