Table of Contents
Canon K-35 MkI 18mm T2.8
Summary
The 18mm T2.8 was the first fixed focal length K-35 made, did not have any aspherical elements, and only covered Academy format images.
Developed as part of a research program jointly carried out by Canon Inc. and Cinema Products Corporation, in cooperation with the Research Center of the Association of Motion Picture and Television Producers, the Canon high speed aspheric lenses were especially designed to meet the critical tolerances required for professional 35mm cinematography.
Tech Specs
| Manufacturer | Canon |
| Series | K-35 |
| Model | MkI |
| Focal Length | 18mm |
| Max Aperture | T2.8 |
| Min Aperture | T16 |
| Format | Academy |
| Image Circle | 43mm |
| Minimum Focus | 12 in. |
| Focus Rotation | 300 |
| Iris Blades | 15 |
| Optical Design | - |
| Squeeze | none |
| Front Diameter | 95mm |
| Filter Thread | - |
| Focus/Zoom Rod | none |
| Native Mount | BNCR, PL |
| Data Protocol | none |
| Length | 4.3 in. |
| Weight | 1701g |
| Body Telescope | none |
| Body Material | Aluminum |
| Focus Drive | Manual |
| Iris Drive | Manual |
| Zoom Drive | n/a |
History
Country of Origin:
Release Date: 1971
Launch Price:
Design Revisions:
Service
This section restricted to Duclos Staff users.
Service Manual: Disassembly/Re-assembly
Full CLA: 7-8 hrs.
spray threads: + 1 hr.
excessive cleaning: 9 hrs.
repaint FE (Keslow only): + 1 hr.
install PL mount: + 4 hrs.
24mm: 2 hrs.
install new keys: TBD
Accessories:
BNCR - PL conversion: see notes
TLS PL mounts BNCR mounts in black aluminum will require modification along with the PL mount. BNCR in stainless steel (series 3) do not need modification. check compatibility with TLS before ordering.
Install iris gear (aluminum): See QB to confirm pricing.
…end of Staff section
Notes
Media
