The UFL-G140 SD provides wild wide underwater footage at nearly the same view angle as using GoPro on land.
Ultra-Wide Even Underwater
Though an action camera is equipped with an ultra-wide lens, its coverage underwater will dramatically narrow down due to the different refraction ratio between air and water. For example, the maximum angle of view of GoPro® HERO11 Black is approx. 156° on land which will narrow down to approx. 94° when we put the camera in genuine dive housing and bring it underwater due to different refraction index. The INON UFL-G140 SD provides ultra-wide semi-fisheye imaging with angle of view 140° underwater enabling wild underwater video work only with action cameras.
* Measured angle of view by INON or calculated angle of view underwater based on the measured angle of view. Not confirmed by camera manufacture. The measured angle of view of “HERO3+ Silver Edition” is approx. 142°(air) which is less wide than the “Black Edition”. So angle of view underwater with this lens is less than 140°. The “HERO3+ White Edition” has not been tested.
Dynamic CFWA Imaging Theoretically, the depth of field (DoF) of the GoPro Black Edition on land are approx. 60cm/2ft to . With the INON UFL-G140 SD, DoF underwater will be extended to 4cm/1.6in to for HERO4/HERO3+ or 10cm/3.9in to for HERO3 enabling you to shoot a subject at close range to benefit deformed and/or perspective result. * DoF on land is based on focal length/aperture of the camera lens and pixel pitch of the image sensor. DoF underwater is measured from "the forefront of the lens". Other Edition has not been tested.
Professional-level Image Quality The UFL-G140 SD is constructed of 4 elements in 4 groups. The rear element is made from a high refractive index glass lens to minimize the whole size dramatically without sacrificing performance. The front acrylic dome has five layers of multi-coating on its inner surface providing the same grade of image quality as an optical glass dome at affordable pricing.
Speedy Lens Exchange by SD Mount Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater. Compatible with AD Lens Holder to hold a lens when not in use.
Body material/finishing: Corrosion-resistant aluminum alloy / rigid black alumite, PC etc.
Lens material/coating
Optical glass/both side coating,
Optical plastic/both side hard coating, inner multi-coating
Depth of field (*1)
4cm / 1.6in to (HERO4, HERO3+ Black)
10cm / 3.9in to (HERO3 Black)
Lens construction 4 groups 4 elements
Max. view angle (*2) 140.0_(underwater)
(*1) Measured distance underwater for GoPro HEOR4/HERO3+ Black/HERO3 Black. Divide by 1.33 for visual distance underwater. Other Edition has not been tested.
(*2) Actual angle of view (actual field of view) varies among different shooting modes.
