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Aquatica Port Extension Ring with Focusing Knob for Canon EF 17-40mm f/4 Lens

Aquatica Port Extension Ring with Focusing Knob for Canon EF 17-40mm f/4 Lens

Aquatica Port Extension Ring with Focusing Knob for Canon EF 17-40mm f/4 Lens

B&H # AQPEC1740 MFR # 18465
Aquatica Port Extension Ring with Focusing Knob for Canon EF 17-40mm f/4 Lens

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Ship Time: 7-14 business days 

Product Highlights

  • Extends Length of Port by 2.50"
  • Retractable Focusing Knob
  • Optimized for 9.25" Megadome Port
  • Depth Rated to 300' (91 m)

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You Pay: $440.00

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Overview
  • 1Description

This Port Extension Ring with Focusing Knob from Aquatica features a manual focusing knob for the Canon EF 17-40mm f/4 zoom lens. The ring extends the length of the port by 2.50". The knob connects to the lens focus ring via a gear. This knob has a retractable mechanism that makes installing and removing the lens a quick and simple operation. Optimized for the Aquatica 9.25" (23.50 cm) Megadome port, the ring will also work with the 8" dome port. It features anodized aluminum construction and a depth rating of 300' (91 m).

Canon, Sigma and Tokina Type 1 Lens Chart
Canon, Sigma and Tokina Type 2 Lens Chart
Canon Type 4 Lens Chart

In the Box
Aquatica Port Extension Ring with Focusing Knob for Canon EF 17-40mm f/4 Lens
  • 1 Year Limited Warranty
  • Table of Contents
    • 1Description
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    Specifications
    Length Adds 2.50" (63.5 mm) to port
    Construction Anodized aluminum
    Depth Rating 300' (91 m)
    Weight 1.0 lb (0.45 kg)
    Dimensions 4.81 x 6.60 x 3.41" (12.22 x 16.76 x 8.66 cm) (Diam. x W x H)
    Packaging Info
    Package Weight 1.35 lb
    Box Dimensions (LxWxH) 6.7 x 6.4 x 4.3"

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