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THIS LENS PAGE NEEDS VERIFICATION.
A MkI version of the 28mm T2.1 may not exist. Confirmation needed.
Standard mount lenses: ARRI Standard mount, smaller lens housing, no geared iris or focus rings, focus “wings” or tabs
Standard Speed MkI: ARRI Standard or PL mount, larger lens housing, geared focus ring, no geared iris ring
Standard Speed MkII: ARRI Standard or PL mount, larger lens housing, geared focus and iris rings
| Manufacturer | ZEISS |
| Series | Standard Speed MkI |
| Model | Distagon |
| Focal Length | 28mm |
| Max Aperture | T2.1 |
| Min Aperture | T22 |
| Format | Super 35 |
| Image Circle | - |
| Minimum Focus | 11 in. |
| Focus Rotation | - |
| Iris Blades | - |
| Optical Design | - |
| Squeeze | none |
| Front Diameter | 80mm |
| Filter Thread | none |
| Focus/Zoom Rod | n/a |
| Native Mount | PL |
| Data Protocol | none |
| Length | 2.5 in. |
| Weight | 10221 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:
28mm is often one of the best looking optically in T2.1 set. image should be sharp and clear with no blooming. if you see blooming, an element that has similar curvature surfaces may be upside-down.
Service Manual: Disassembly/Re-assembly
Screws: ZEISS
PL Mount Cone Sizes: ZEISS PL Cone
Full CLA: 6-7 hrs.
Spray and bake threads (teflon coating): +1 hr
+1 hr for lenses with a floating element: 20mm T2.1, 28mm T2.1
re-anodize front ring: $50 (anodizing cost) + 5-6 hrs to access front ring.
to access front ring for anodizing, lens must be fully dis-assembled. a full CLA is required
Replace front or rear element (not mounted) only: 1 hr. ea.
Strip and re-paint rear housing: +1 hr if getting other service work or 2 hrs if no other service is included.
close focus mod: 1 hr
Offered for: 16mm, 24mm, 32mm T2.1 only to achieve 3 full focus rotations.
cannot offer this for other focal lengths because the focus threads will be exposed and cannot achieve enough rotations.
Not normally offered unless specifically requested: 40mm can achieve additional 1/2 rotation only before exposing focus threads. requires installation of additional stop pin in focus ring for hard stop.
Non-OEM focus scales: see P/N 38211222, possibly available, check with Paul before quoting.
non-OEM, reverse engineered but copied original design to best match lens.
…end of Staff section