angenieux Optimo Spherical 19.5-94 Long Wide Zoom Lens User Manual
- June 12, 2024
- angenieux
Table of Contents
Optimo Spherical 19.5-94 Long Wide Zoom Lens
User Manual
Reference : 311 747 A
Edition : 04/2012
THALES ANGENIEUX
Boulevard Ravel de Malval
42570 SAINT-HEAND FRANCE
Tél : +33 (0)4 77 90 78 00
Fax : +33 (0)4 77 90 78 03
www.angenieux.com
GENERAL DESCRIPTION AND MAINTENANCE RECOMMENDATIONS
1.1 GENERAL DESCRIPTION
Angénieux OPTIMO 19.5 -94 Super 35 Film or digital Lens
| Zoom ratio: | 4.7x |
|---|---|
| Focal length: | 19.5-94mm |
| Aperture: | T2.6 – f/2.4 |
| MOD: | 0.62 m – 2’½’’ |
| Weight (approx.): | 5.6kg – 12.3 lbs |
| Front Diameter: | 136 mm |
| Focal length | 19.5mm |
| --- | --- |
| Horizontal angular field of view | 64.8° |
| Object dimensions at MOD(mm) | 407×291 |
| Horizontal angular field of view | 58.2° |
| Object dimensions at MOD(mm) | 344×246 |
1.2 MAINTENANCE RECOMMENDATIONS
The complete maintenance of such a lens should only be performed by highly
qualified people or factory trained technicians.
If you are uncertain of your capabilities to do the repair, feel free to send
the lens to our THALES ANGENIEUX After Sales Service. Our qualified
technicians will ensure proper handling of all maintenance and repair related
items.
In addition,THALES ANGENIEUX can offer preventive maintenance operations, to
keep your lens, always in perfect conditions
Feel free to contact us for :
France and International customer support at :
[email protected]
Americas customer support at :[email protected]
MAINTENANCE ITEMS
| Description | Spanner | Retaining ring or screws # | Locking torque |
|---|---|---|---|
| Tracking retaining ring spanner | 194537 | 216 190 (13) | 5 Nm |
| Tracking adjustment Allen key | Allen key 2 mm | 987 097 (12) |
EXTERNAL VIEW
| Indication | P/N | Designation | Quantity |
|---|---|---|---|
| 1 | 178458 | Front cap | 1 |
| 2 | 215751 | Focus rubber ring | 1 |
| 3 | 212926 | Focus lever | 1 |
| 4 | 217190 | intermediate bracket | 1 |
| 5 | 986117 | Screws for bracket | 2 |
| 6 | 215877 | Lens bracket | 1 |
| 7 | 215729 | Zoom rubber ring | 1 |
| 8 | 212926 | Zoom lever | 1 |
| 9 | 188245 | PL mount cap | 1 |
REAR GROUP VIEW (FOR BACK FOCUS AN TRACKING ADJUSTMENT)
| indicatio | P/N | Designation | Quantity |
|---|---|---|---|
| 0 | 992707 | Rear cover fixation screws | |
| 11 | 216191 | Rear cover | |
| 12 | 987097 | Tracking adjustment screws | |
| 13 | 216190 | Tracking retaining ring | |
| 14 | 992597 | Screws | |
| 15 | 215934 | Flange aluminium shim | |
| 16 | 215779 | Peelable shim (not to be used for back focus adjustment) | |
| 17 | 306801 | Range peelable shim (back focus adjustment) | “ |
| 18 | 311189 | PL mount | |
| 19 | 311185 | Rear sub-assembly |
4.1 FLANGE/BACK-FOCUS ADJUSTMENT
The flange adjustment can be optimized by modifying the thickness of the
flange shim (17)
- Mount a PL checker on the lens
- Mount the lens on the projector
- Calibrate the distance between the screen and the focal plan at 6′
- Optimize the focus at long focal length
- Then, zoom to short focal length
- If the best focus plan is between the screen and the lens, it is necessary to decrease the thickness of the shim (17)
- If the best focus plan is behind the screen, it is necessary to increase the thickness of the shim.(17)
- To replace the flange shim (17), remove the PL mount (18) (Picture 4 & 5)
- Remove the shim (17) (Picture 5)
- Install the new shim (17)
- Mount the PL mount (18)
- Reset the focus at the long focal length and repeat the procedure as described above
4.2 TRACKING ADJUSTMENT
- Unscrew the 3 screws (10) and remove the rear cover (11)
- Mount a PL checker
- Put the lens in projection focused at a distance of 6’ at the long focal length
- Place a marker in the centre of the image
- Put the lens at the short focal length
- Measure the distance T between the centre of the marker and the centre of the short focal length
- Adjust the tracking T at short focal length with the screws (12) (Picture 6b) to be conform with the specification (Picture 6a)
- Repeat the operation if necessary
- Reinstall the rear cover (11)
4.3 REPLACEMENT OF THE FOCUS ENGRAVED RING (FEET METERS)
- Remove the focus rubber ring (2)
- Put acetone on the head of the focus ring fixations screws Picture 7
- Remove the 3 screws picture 8
- Remove the lens bracket (6) and the 2 screws (5) Picture 9
- Remove the focus engraved ring in feet Picture 10
- Install the focus engraved ring in meters Picture 11
- Mount the 3 screws and tighten them to contact to prevent to have a too much stiff focus torque Picture 11
- Put locking varnish 286642 on the 3 head of the focus ring fixations screws
- Mount the lens bracket (6) with the 2 screws (5) Picture 12
- Mount the focus rubber ring (2)
OUTLINE DRAWING
DEPTH-OF-FIELD TABLES
ZOOM Super 35
F = 19.5 – 94 mm
The depth of field tables are provided for informational purposes only and are
estimated with a circle of confusion of 0.025mm (1/1000inch).
The width of the sharpness zone grows proportionally with the focus distance
and aperture and it is inversely proportional to the focal length.
In practice the depth of field limits can only be defined accurately by
performing screen tests in true shooting conditions.
ZOOM OPTIMO 19.5 – 94
- Aperture
- Hyperfocal distance
- Object distance far/near
- Confusion circle : 0.025 mm
