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| Manufacturer | ZEISS |
| Series | ZE |
| Model | Otus Apo Sonnar |
| Focal Length | 100mm |
| Max Aperture | f/1.4 |
| Min Aperture | f/16 |
| Format | Full Frame |
| Image Circle | 43mm |
| Minimum Focus | 39.4 in. |
| Focus Rotation | 315 |
| Iris Blades | 9 |
| Optical Design | 14/11 |
| Squeeze | none |
| Front Diameter | 101mm |
| Filter Thread | 86mm |
| Focus/Zoom Rod | none |
| Native Mount | EF |
| Data Protocol | - |
| Length | 5.1 in. |
| Weight | 1405 g |
| Body Telescope | none |
| Body Material | Aluminum |
| Focus Drive | Manual |
| Iris Drive | Manual |
| Zoom Drive | n/a |
Country of Origin: Germany
Release Date: -
Launch Price: -
Design Revisions:
This section restricted to Duclos Staff users.
Known Issues:
Discontinued 2024 by ZEISS. Repairs and replacement parts may be limited or unavailable.
Ask sales about suggested alternative lenses.
Service Manual: Disassembly/Re-assembly
ZEISS element compatibility: FE/RE Compatibility
Full CLA: 5-6 hrs.
Limited service offered sue to built in electronic components.
send to ZEISS KY for major repairs and replacement parts.
focus threads are attached to the inside of focus scale. to access threads, optics and front housing must come apart. gets full clean and re-lube. no shortcuts
Loose front ring: 1 hr.
Removing focus gear:
if gear is tight one lens and needs to be heated up a lot, remove rear housing (witness ring) to help with removing the gear. This prevents the gear form getting stuck on the cutout window and potentially bending the “corners” of the window cutout which can cause scraping after the gear is reinstalled later.
…end of Staff section
This section restricted to Duclos Staff users.
Focus Ring O.D.: -
Zoom Ring O.D.: -
Iris Ring O.D.: -
De-click Y/N: -
Additional Notes:
…end of Staff section