Add Auxiliary Lens; Anamorphic (1.25X); Wide Converter Lens (1.26X) - Christie CP2000-SB User Manual

Section 1: Introduction

2.8.5 Add Auxiliary Lens

If present, swing the auxiliary lens in position in front of the primary lens. It should magnify in the horizontal
direction only, stretching the image straight across the screen—this requires that its aperture (visible within the
lens) be vertically aligned with the screen. If the image appears skewed, loosen the locking ring on the
auxiliary lens and rotate the lens as necessary until the wide image is horizontal. Refer to the Motorized
Auxiliary Lens Mount Instruction Sheet (020-100036-04) for details on mounting the anamorphic and wide
converter lenses.

Anamorphic (1.25x)

1. FOCUS PRIMARY LENS: With the auxiliary lens in place, re-focus the primary lens using focus knob.
The goal is good focus at center and on all sides.
2. FOCUS ANAMORPHIC LENS: If horizontal focus in the image needs improvement, focus the auxiliary
lens too—rotate its barrel as needed.
3. RECORD SERIAL NUMBER: Enter the serial number of your anamorphic lens in Advanced: Lens
menu. Refer to Figure 3-20 Advanced: Lens Menu Options, on page 3-31.

Wide Converter Lens (1.26x)

NOTE: Use a gauge block (or measuring device) to establish basic alignment of the wide converter lens to the
primary lens.
trast Zoom lenses only: 1.45-1.8:1, 1.8-2.4:1, 2.2-3.0:1 or 3.0-4.3:1.
1. FOCUS PRIMARY LENS: With the auxiliary lens in place, re-focus the primary lens using focus knob.
The goal is good focus at center and on all sides.
2. LENS CLEARANCE: Adjust clearance between the primary and wide converter lens to match the values
in the following table. NOTE: Measure from front of prime lens to back of wide converter lens barrel.
Zoom Lens
1.45 - 1.8:1
1.8 - 2.4:1
2.2 - 3.0:1
3.0 - 4.3:1
3. VERTICAL LENS POSITION: Adjust the converter lens vertically so that it is exactly on the center line
with the pre-adjusted prime lens.
4. HORIZONTAL LENS POSITION: Adjust the converter lens horizontally so that it is exactly on the
center line with the pre-adjusted prime lens.
5. PITCH ADJUSTMENT: Adjust the top and bottom clearance between the wide converter and prime
lenses until they are equal, using a wedge gauge or small calipers.
6. YAW ADJUSTMENT: Adjust the two side clearances between the wide converter and prime lenses until
they are equal, using a wedge gauge or small calipers.
7. RECORD SERIAL NUMBER: Enter the serial number of your converter lens in Advanced: Lens menu.
Refer to Figure 3-20 Advanced: Lens Menu Options, on page 3-31.
2-28
Use the Wide Converter lens with the following High Brightness or High Con-
Clearance
8.6 mm + 2
13.6 mm + 2
6 mm + 2
6 mm + 2
CP2000-SB User Manual
020-100162-06 Rev. 1 (03-2014)