Angenieux Optimo Spherical 19.5-94 Long Wide Zoom Lens User Manual

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

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

EXTERNAL VIEW

REAR GROUP VIEW (FOR BACK FOCUS AN TRACKING ADJUSTMENT)

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

1. Aperture
2. Hyperfocal distance
3. Object distance far/near
4. Confusion circle : 0.025 mm

References

• Thales - Building a future we can all trust
• Angénieux | Professional cinema lens manufacturer