This wide-angle dome port is part of the N85 port system, features an acrylic element and anodized aluminum construction and is specific for use with the Canon EF-EOS M adapter and EF 8-15mm f/4L Fisheye USM, with a knob for zooming (requires optional zoom gear).
Technical Specifications
| Depth Rating | 100m |
| Port System | N85 |
| Weight |
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| Port Opening Diameter |
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| Port Diameter | 4.33" |
| Body Material | Anodized Aluminum Alloy |
| Port Material | Acrylic |
| Port Coating |
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| Port Shade Material |
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| Removable Port Shade |
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| Spare O-ring | 90143 |
