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Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long
Top-Down Porthole, Extra Long

Top-Down Porthole, Extra Long

62 reviews
$ 49.99

Take great photos of your aquarium from the top down, the way corals are meant to be viewed!  This handy lens housing mounts directly to the barrel of your DSLR lens, allowing you to (carefully) dip the housing in the water and get tack sharp photos without annoying lightbulb reflections or surface ripples.  Using the three thumbscrews to mount the housing on the lens barrel, you can turn the housing to zoom the lens, which can be difficult with traditional top-down photo boxes.

The Porthole features a silicone band for extra grip, and lens standoffs to protect the acrylic from scratches when set face-down.

Inner diameter of the housing is approximately 4" and supports a wide range of lens sizes.  The housing length is 7" overall, and the barrel depth is 6-3/8" to the inside of the acrylic lens.   This allows compatibility with external-focus/zoom lenses and large macro lenses.

Many thanks to our friend Chris Thomas (143gadgets) for the photos taken with the Porthole.  As a professional photographer, he has provided us with valuable feedback during the product's design.

Customer Reviews
4.8 Based on 62 Reviews
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NB
08/30/2021
Nathan B.
United States United States
Camera Tube

Works really well and much less than competitors I’ve checked out!

MF
07/12/2021
Michael F.
United States United States
Porthole Review

So great being able to take shots underwater with clarity. Well made simple design that is easy to use.

DA
07/10/2021
Daniel A.
United States United States
Great products from a great company

Always get great products from advast. They craft really good equipment and out recommend them to anyone.

HH
06/02/2021
Halen H.
United States United States
It works good

It works just as it should, simple and functional with no issues. I like the rubber bumpers that protect the lens when you set it down.

KS
05/03/2021
Kevin S.
United States United States
Good Porthole and customer service

Really enjoying the port hole so far, Inuse it with a Sony 90mm and it works wonderful. The customer service was also really easy to work with and quick with responding. Would recommend this product easily.