Your cart
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

37 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

4.9 Based on 37 Reviews
5 ★
92% 
34
4 ★
8% 
3
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • charm
  • suggestion
  • lens
  • marks
  • scuffs
  • lens body
  • ends
  • screws
  • pics
  • photos
RG
01/01/2020
Ricky G.
United States United States

Works great with Nikon Z6

Very easy to set up and does not hinder the autofocus.

Ricky Goettel verified customer review of Top-Down Porthole, Extra LongRicky Goettel verified customer review of Top-Down Porthole, Extra Long
CL
12/27/2019
Christine L.
United States United States

Great Product

Getting great shots. Using my Canon 60D w/ Canon 100mm macro f2.8l. Love it!

KW
12/24/2019
Kevin W.
United States United States

Quality Product

Well constructed and operates as intended.

BE
12/16/2019
BERNARD E.
United States United States

Love it !

Excellent! Finally get those great shots without the water glare and reflection.

BERNARD E JAROLD verified customer review of Top-Down Porthole, Extra Long
A Avast Marine Works Customer
SC
11/10/2019
Stephen C.
United States United States

A staple in the industry

The pictures I take using this amazing porthole are out of this world. Night and day from my older pictures.

Stephen Casey verified customer review of Top-Down Porthole, Extra Long