Port Chart

Page 1 of 13 Port Charts for Ikelite Housings with Dry Lock (DL) Port System Rev. 2017.02.27
Port Recommendations
for Ikelite Housings with Dry Lock (DL) Port System
Reading the Chart
Lenses are listed by manufacturer and are sorted in numerical order by focal length. Shorter focal lengths have a wider field of view; longer focal lengths are more narrow.
Port Recommendation Column
Recommendations are based on the best information we have available at the time and are subject to change without notice. Improper fit may occur due to lens hoods, optional
accessories, incorrect information from the lens manufacturer, typos, or corrupt data. As with all underwater equipment, please assemble and check your system for fit with plenty
of time prior to leaving on your trip. Some vignetting (dark shading in the corners of the image), lack of edge definition, and/or spherical aberration may be present depending on
choice of lens and port.
Zoom or Focus
In general, dome ports are recommended for zoom lenses to allow maximum use of the lens’ zoom range with little or no vignetting. All lenses support auto focus (AF) only unless
otherwise noted. If a gear is listed for a fixed lens, this is an optional gear for manual focus.
+4 Close-Up Lens
Dome ports create an apparent image approximately 12” from the camera’s sensor plane when taken under water. A lens must have a minimum focus distance of less than 12” to
achieve focus behind a dome. This additional lens shortens the minimum focus distance of your lens to less than 12” to provide sharp images when using a dome under water. A
+4 close-up lens (or diopter) is available for purchase through your local camera store, and is commonly sold in a set with +1 and +2 close-up lenses. Common brands include
Tiffen and Hoya. Make sure to purchase the correct size for your lens. The thread diameter is usually referenced on the front of the lens in millimeters 58mm, 67mm, etc.).
Lens Missing?
We do not have access to every lens on the market in order to provide a recommendation. If you need help selecting a port for a lens not listed, please email us at
ikelite@ikelite.com with the full lens name, and verified lens diameter and fully extended length measured with calipers from the camera’s lens mount including any lens hood or
projections. We are not able to provide recommendations for extending zoom lenses based on manufacturer’s published specifications—the lens must be measured by hand in
order to select an appropriate port. We are not able to provide information on possible vignetting or corner softness for lenses we have not tested.

Summary of content (13 pages)