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16.5 mm Port Extension Ring for Aquatica Bayonet Style Housings
16.5 mm Port Extension Ring for Aquatica Bayonet Style Housings
$7900
Aquatica

Aquatica 16.5 mm Port Extension Ring for Aquatica Bayonet Style Housings

MFR Part #: 18456
Samy's Part #: S-024595
  • 16.5 mm Port Extension Ring for Aquatica Bayonet Style Housings Image 0
Availability: In Stock
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$7900
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The Aquatica 16.5 mm Port Extension Ring for Aquatica Bayonet Style Housings is especially designed for the Canon EF 17-40mm f/4 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.

To check lens and lens port compatibility, see the following charts:

Canon, Sigma and Tokina Type 1 Lens Chart
Canon, Sigma and Tokina Type 2 Lens Chart
Canon Type 4 Lens Chart
Nikon, Sigma and Tokina Type 1 Lens Chart
Nikon, Sigma and Tokina Type 2 Lens Chart
Nikon, Sigma and Tokina Type 3 Lens Chart
Nikon, Sigma and Tokina Type 4 Lens Chart

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Underwater Housing Information
Material Anodized aluminum
  • 1 Year Warranty
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