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Peter A. Merigold designed the Series III lenses. This update covered just two focal lengths – the 18mm Series I was bought up to date with a redesign and the 25mm was upgraded. Both lenses were rated at T2.2 and were some of the first cine lenses to use aspheric optics in their designs. The use of an aspheric surface greatly increased aberration correction in these new lenses whilst also allowing for a decrease in complexity of the optics, thereby reducing the physical size of the lens. Series II and Series III sets quickly became intermixed with the latter covering the wider end of the focal length range. Over the decades that ensued hundreds of titles were filmed on this combination and they became very popular candidates for lens rehousing.
| Manufacturer | Cooke |
| Series | Prime |
| Model | Speed Panchro Ser.III |
| Focal Length | 25mm |
| Max Aperture | f/2.0 (T2.2) |
| 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: England
Release Date: -
Launch Price: -
Design Revisions:
This section restricted to Duclos Staff users.
Service Manual: (Insert link to manual here)
Full CLA: #hrs.
Enter relevant notes here
…end of Staff section