Sea & Sea Focus Gear for Canon EF 17-40mm f/4L USM Lens in Port on MDX Housing

BH #SEFGCEF1740 • MFR #SS-31170
Sea & Sea
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.
Special Order
Expected availability: 2-4 weeks
$194.95
$33/mo. suggested payments.*
with 6 Mos. Promo Financing
Rob S., B&H Photo Expert

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Sea & Sea SS-31170 Overview

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 Specs

Gear TypeFocus Gear
Lens CompatibilityCanon EF 17-40mm f/4L USM
MaterialAluminum
Dimensionsø: 3.7 x L: 0.6" / ø: 94 x L: 15 mm
Weight1.6 oz / 45 g
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