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ZEISS S16 MkIII lenses have both iris and focus gears, engravings are horizontal - read upright when lens is horizontal
| Manufacturer | ZEISS |
| Series | S16 |
| Model | MkIII |
| Focal Length | 25mm |
| Max Aperture | T1.3 |
| Min Aperture | - |
| Format | - |
| Image Circle | ⌀ |
| Minimum Focus | - |
| Focus Rotation | ° |
| Iris Blades | - |
| Optical Design | - |
| Squeeze | - |
| Front Diameter | - |
| Filter Thread | - |
| Focus/Zoom Rod | - |
| Native Mount | - |
| Data Protocol | - |
| Length | - |
| Weight | - |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
Country of Origin: -
Release Date: -
Launch Price: -
Design Revisions:
This section restricted to Duclos Staff users.
Service Manual: Disassembly/Re-assembly
Full CLA: 5-6 hrs.
+ 1 hr for spray and bake (teflon) on threads.
Attention: Take note of the irregular stack of iris blades. After the first three small blades are installed, the second three (with the smaller notch) overlap so that the “tails” rest on top of its neighbor, whereas the last three blades (the larger notch) stack so that the tails are tucked under their neighboring blade. This is done to prevent binding and breakage, which can occur if one were to stack both the second and third sets the same way.
…end of Staff section
In a nutshell…
MkI: no iris or focus gears.
MkII: no iris gear, but has focus gear.
MkIII: has both focus and iris gears.