We recommend to use the following lenses with the OPP Optical Precision Port:
NIKON
AF‑S 16–35 mm 1:4G ED VR
Z 14–30 mm 1:4S
CANON
EF 16–35 mm 1:2,8L III
EF 16–35 mm 1:4L IS USM
RF 15–35 mm 1:2,8L IS USM
RF 14–35 mm 1:4L IS USM
SONY
FE 16–35 1:2,8 GM II
If you’re interested to see how the OPP performs in an extensive and systematic test, go ahead and read the in-depth test report here.
The OPP is a water correction optic based on the principle of the Ivanoff-Rebikoff lens system, which has been meticulously revised by our optical engineers and adapted to the requirements of modern optics. The revolutionary concept of the OPP is an integrated system consisting of several lenses that utilize the refractive properties of water, effectively transforming the optics from water to air. The familiar optical quality of the lens used on land is fully maintained – corner sharpness and, in particular, depth of field is significantly improved.
Find more details, information and comparisons in our extensive technical test of the OPP.
Consisting of a multi-part lens system, the OPP Frontport establishes direct contact with the water. You won’t find a dome port here – the design utilizes a flat front glass. The multi-coated optical element is located inside, while the front glass surface provides optimal scratch protection. The OPP has a very compact design and is equipped with easily removable lens hoods. Thanks to its small packing size and equivalent weight to our Superdome, the OPP takes up very little space in your luggage, making it extremely travel-friendly.
To ensure the OPP delivers perfect image quality underwater, an optical correction lens is screwed onto the lens used, forming an integral part of the system. Together, they form a complete, functional unit, precisely matched to each other, and guarantee the best possible image quality from your lens.
To accommodate the wide range of lenses used for demanding underwater photography, our OPP system is flexibly designed. Matching port extensions with the proven SEACAM bayonet mount and corresponding correction lenses allow the use of multiple lenses. We are happy to advise you on which lenses are best suited for underwater use with this system. Thanks to the special shape of these port extensions, your OPP is virtually neutral underwater, making your housing incredibly easy to handle. It’s also worth noting that the port extension can be used for storage during transport. The OPP is supplied with matching lens caps and a neoprene cover.
In a systematic laboratory test, the SEACAM OPP was put through its paces under controlled conditions in a custom-built, specialized tank. The SD Superdome and CP Compact Port were brought in for direct comparison, with optical criteria such as sharpness, distortion, and depth of field reproducibly analyzed using precise test charts. Alongside the primary reference lens, the Nikon 16–35mm f/4, the evaluation also featured classic wide-angle lenses as well as the legendary native Nikonos RS underwater optics.
For SEACAM, the individual needs and requirements of underwater photographers always take precedence. Especially with optical solutions, however, the seemingly simplest aspects often prove to be the most difficult to realize. Therefore, only close cooperation and intensive exchange with photographers and experts pave the way for innovation and novelty. SEACAM Ambassador Don Silcock has captured a significant amount of images with the new OPP in a year of intensive work and is convinced of the outstanding image quality and handling of the OPP.
His experience and diverse deployments across all oceans prompted us to ask Don to test our new OPP rigorously and intensively. We quickly convinced him to conduct extensive tests under real-world conditions. Read for yourself what he can already say about our OPP after a year of use. Don regularly publishes in various magazines and has written almost 150 articles about his travels and experiences.
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