The Sea Frogs 2.64'' (67mm) Optical Glass Flat Medium (90mm/3.54'') Port
Designed with a 90mm (3.54'') bayonet mount. It is compatible with most Sea Frogs/Salted Line underwater housings, excluding A6xxx and RX1xx series models
The port can be also used with A7II NG housings with minor limitations. (Please contact us for more information.)
When paired with the FE 28-70mm f/3.5-5.6 OSS lens, minimal vignetting occurs at 28mm but disappears at 29mm. However, when using a "wet" wide-angle attachment, vignetting is present from 28mm to 60mm, significantly reducing its effectiveness.
In contrast, a "wet" close-up/macro attachment enables high-quality imaging of small subjects at focal lengths between 50mm and 70mm.
Overall, this setup serves as an affordable option for underwater macro photography.
How deep can it go?
The 2.64'' (67mm) Flat Port is rated for depths of up to 40 meters (130 feet), ensuring reliable
underwater performance.
Disclaimer: Every effort has been made to ensure that the descriptions and images provided are accurate and up-to-date. However, occasional errors may occur, and product features, specifications, or appearances may change without notice. We recommend verifying any details that are critical to your purchasing decision.