MAIL ORDER 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
In-store prices may vary
Select Size:
QTY
Free Shipping

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

  • AquaTech - LP-NTZ Flat Port for the Nikon 70-200mm f/2.8 VR Lens
    $395.00
  • Ikelite - Flat Port for Canon 100mm f/2.8 EF USM Macro Lens
    $199.95
    Special Order
    Call to Order: 1-800-321-4726
  • Nauticam - Flat Port 74 for Sony FE 28-70mm F3.5-5.6 OSS Lens
    $380.00
    Special Order
    Call to Order: 1-800-321-4726
  • Nauticam - Macro Port 41 For DSLR Housing
    $360.00
  • Ikelite - Flat Port with Focus Control for Canon EF 100mm f/2.8L Macro IS USM
    $249.95
  • Nauticam - Wide Angle Port for Sony FE 35mm f/2.8 ZA Lens
    $450.00
  • KNEKT - KSD6 6in Dome Port
    $299.99
  • Sea & Sea - Compact Macro Port base for Nikkor 105mm f/2.8G ED-IF AF-S VR Micro Lens
    $239.95
  • Zen Underwater - 170mm Optical Glass Dome Port for Nauticam Mirrorless Housings
    $1,099.00
    Special Order
    Call to Order: 1-800-321-4726
  • Zen Underwater - 100mm (4 In.) Optical Glass Dome Port for Nauticam Housing
    $899.00
  • Nauticam - 6 In. Wide Angle Port for Panasonic Lumix G Vario 7-14mm Lens
    $500.00
  • Zen Underwater - Universal 200mm Dome Port for Aquatica Housings
    $1,399.00
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 © 2016 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.
]