Lens Inon Wide for GoPro (increase FOV from 94 to 140 degrees underwater)

Lens Inon Wide for GoPro (increase FOV from 94 to 140 degrees underwater)

Though an action camera is equipped with ultra wide lens, its coverage underwater will dramatically narrow down due to different refraction ratio between air and water. 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.

The UFL-G140 SD is constructed of 4 elements in 4 groups. Rear element is made from high refractive index glass lens to minimize whole size dramatically without sacrificing performance. Front acrylic dome has five layers multi-coating on its inner surface providing as same grade of image quality as like optical glass dome at affordable pricing. 

Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater.

Compatible cameras

• GoPro® HERO13 Black
• GoPro® HERO12 Black
• GoPro® HERO11 Black
• GoPro® HERO10 Black
• GoPro® HERO9 Black
• GoPro® HERO8 Black
• GoPro® HERO7 Black
• GoPro® HERO6 Black
• GoPro® HERO5 Black
• GoPro® HERO+LCD
• GoPro® HERO+
• GoPro® HERO
• GoPro® HERO4
• GoPro® HERO3+
• GoPro® HERO3
• OLYMPUS STYLUS TG-Tracker

Ultra Wide Even Underwater

Though an action camera is equipped with ultra wide lens, its coverage underwater will dramatically narrow down due to different refraction ratio between air and water.
For example, maximum angle of view of GoPro® HERO13 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.

Dynamic CFWA Imaging

Shooting through the INON UFL-G140 SD lens enables you to shoot a subject at close range to benefit deformed and/or perspective result.
The native depth of field (DoF) of the GoPro® HERO13 Black on land is approx. 60cm/2ft to ∞. With the INON UFL-G140 SD, DoF underwater will be extended to 4cm/1.6in to ∞ closer to camera side.

* DoF on land is based on focal length/aperture of camera lens and pixel pitch of the image sensor. DoF underwater is measured from "the forefront of the lens".

* 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.

Specifications

• Size 93.4mm / 3.7in (Diameter), 41.8mm / 1.6in (Length) (including Lens Hood)
• Weight [air] 300g / 10.6oz
• [underwater] approx. 153g / 5.4oz (including Lens Hood)
• Mount system INON SD Mount
• Depth rating 60ｍ / 196.9ft
• 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
• Lens construction 4 groups 4 elements
• Max. view angle (*1) 140.0°(underwater)