CONTACT US AT 800-321-4726

Port Extension Ring with Focusing Knob for Canon EF 16-35mm f/2.8L II Lens

MFR Part #: 18464
Samy's Part #: S-024597
$44000
No tax collected on shipments to states other than California and Nevada
In-store prices may vary
Select Size:
QTY

Description

Rebates

Specifications

Items Included

Rate & Review


The Aquatica Port Extension Ring with Focusing Knob is especially designed for the Canon EF 16-35mm f/2.8L II zoom lens. It is equipped with a knob on its side that connects to the lens focus ring via a gear. This knob has a retractable mechanism that makes installing and removing the lenses a quick and simple operation. Just rotate the release disk to lift the internal pinion gear out of the way.

While Autofocus has always been recognized as a useful tool when shooting still photography, it is not always so when shooting video, in most DSLR Cameras the autofocus performance when used in the video mode is unacceptably slow and most users would prefer to shoot video with access to manual control for critical focusing, a basic and sometime essential requirement for quality video footage.  This new extension ring integrates a knob for manual focus and its dimension has been optimized for our acclaimed 9.25” Megadome, this BK-7 coated mineral glass dome port is the ultimate in optical quality.

The all aluminum construction benefitted from our latest technology improvements and of state of the art 5 axis machining, this is how we managed to keep its weight to a minimum without compromising the 300ft/90m depth rating associated with all our products.

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

Features:
  • Extends Length of Port by 2.93"
  • Knob Features Retractable Mechanism
  • Optimized for Aquatica 9.25" Megadome
  • Depth Rated to 300' (91 m)

Customers Also Browsed

  • Nauticam - 6 In. Wide Angle Port for Panasonic Lumix G Vario 7-14mm Lens
    $500.00
  • Nauticam - Wide Angle Port for Sony FE 35mm f/2.8 ZA Lens
    $450.00
  • Ikelite - Modular 8 In. Dome Port with 4.13 In. Lens Extension Kit
    $574.95
  • Fantasea Line - Line BigEye Lens M67 Mark II
    $219.95
  • KNEKT - KSD6 6in Dome Port
    $299.99
    Special Order
    Call to Order: 1-800-321-4726
  • Sea & Sea - DX Macro Lens Port 52 for Canon EF-S 60mm f/2.8 Macro USM
    $399.95
  • AquaTech - LP-NTZ Flat Port for the Nikon 70-200mm f/2.8 VR Lens
    $395.00
    Special Order
    Call to Order: 1-800-321-4726
  • Nauticam - Flat Port 72 for Sony NEX5 E18-55 and Lumix G 14-42mm Flat Port
    $270.00
  • Fantasea Line - SharpEye M67 UW Macro Lens
    $179.95
  • Ikelite - Modular 8" Dome Port with 5.1" Lens Extension Kit
    $599.95
    Special Order
    Call to Order: 1-800-321-4726
  • Aquatica - Low Profile Macro Port
    $367.95
  • AquaTech - P-215 Flat Lens Port for 70-200mm f/2.8 in Sport Housing
    $245.00
Underwater Housing Information
Material Anodized aluminum
Depth Rating 300ft. (91 m)
Dimensions 4.81 x 6.60 x 3.41" (12.22 x 16.76 x 8.66 cm) (Diam. x W x H)
Weight 1.0 lb (0.45 kg)
  • 1 Year Limited Warranty
Be the First to write a Review.
See any errors? Let us know.
CALL US TOLL FREE AT 1-800-321-4726 FOR CUSTOMER SERVICE & ORDERING.
Copyright © 2017 Samy's Camera All rights reserved. Terms & Conditions | Privacy & Security Policy
Price, images, specifications and descriptions of items are subject to change without notice. We are not responsible for typographical or photographical errors. Rebates & conditions, and expiration dates from manufacturers are subject to their authorization.
]