Use this Focus Gear from Sea & Sea to control manual focusing with your Canon EF 17-40mm f/4L USM lens in a compatible lens port, which mounts onto a Sea & Sea MDX underwater camera housing. For compatibility, see MDX System Chart. The gear mounts onto the focus ring of the lens and is controlled via the required extension ring with focus knob. It does not work with the focus/zoom dial on the housing. It is constructed from a corrosion-resistant aluminum alloy.
Extended Returns thru Feb 01, 2021
Enjoy Extended Returns thru Feb 01, 2021!
You have until Feb 01, 2021 to return or exchange items bought after Oct 19, 2020. All other standard return policy conditions apply.
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Sea & Sea Focus Gear for Canon EF 17-40mm f/4L USM Lens in Port on MDX Housing
Key Features
- Mounts onto Focus Ring of Lens
- Rotate Knob to Adjust Focus with Lens
Use this Focus Gear from Sea & Sea to control manual focusing with your Canon EF 17-40mm f/4L USM lens in a compatible lens port, which mounts onto a Sea & Sea MDX underwater camera housing. For compatibility, see MDX System Chart. The gear mounts onto the focus ring of the lens and is controlled via the required extension ring with focus knob. It does not work with the focus/zoom dial on the housing. It is constructed from a corrosion-resistant aluminum alloy.
Sea & Sea SS-31170 Overview
Sea & Sea SS-31170 Specs
| Gear Type | Focus Gear |
| Lens Compatibility | Canon EF 17-40mm f/4L USM |
| Material | Aluminum |
| Dimensions | ø: 3.7 x L: 0.6" / ø: 94 x L: 15 mm |
| Weight | 1.6 oz / 45 g |
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