Inon UCL-G165 II SD Wide Close-up Lens for Action Cameras

INON INC. is pleased to announce official release of “cage”, “semi-fisheye conversion lens” and “wide close-up lens” for GoPro® HERO3/3+ genuine dive housing (depth rating: 60m/197ft) on September 25th , 2014.

• SD Mount Cage HERO3/3+ (*1)(*2) - needed to mount UFL-G140 SD or UCL-G165 SD and sold separately (not included with lens)!
• UFL-G140 SD Underwater Semi-fisheye Conversion Lens (*3)(*5)
• UCL-G165 SD Underwater Wide Close-up Lens (*4)(*5)

(*1) Compatible housing is genuine “Dive Housing (60m/197ft)”. The “Standard Housing (40m/131ft)” packaged with “GoPro® HERO3+” is not compatible. (“GoPro®　HERO3” is packaged with the “Dive Housing”)
(*2) When using on land, set FOV mode other than [Wide] or use without the SD Mount Cage to prevent vignetting observed mainly in Ultra Wide mode even without an attachment lens. (No vignetting underwater)
(*3) Designed only for underwater use. (When using on land, distant subject is not in focus and angle of view is not as wide as rated)
(*4) Designed only for underwater use. (When using on land with FOV setting [WIDE], vignetting will be observed)
(*5) Not usable for [SuperView mode] of GoPro® HERO3+ Black Edition as this mode adds software-based deformation effect enhancing more aberrations when using an attachment lens.

UCL-G165 SD Underwater Wide Close-up Lens

• A GoPro® is a deep focus camera preventing a subject gets in focus within 60cm/2ft range in theory thus not usable for underwater macro shooting. By using this lens, minimum focus distance underwater will be shorten; the depth of field (DoF) of camera will be 7cm/2.8in～∞(*15) for GoPro® HERO3 or 5cm/2.0in～35cm/1.1ft(*15) for GoPro® HERO3+ enabling high magnification/close-up imaging.
• Measured maximum angle of view of GoPro® HERO3/HERO3+ Black Edition is approx. 151°(*16) on land which will narrow down to approx. 94°(*16) when we put the camera in genuine dive housing and bring it underwater due to different refraction index. The INON UCL-G165 SD is a unique close-up lens providing slightly wide angle of view underwater 110° to have deeper DoF benefitting you with less out-of-focus close range clip which is not possible with standard close-up lens.
• Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater.
• Optics is constructed of 2 elements in 2 groups. All elements are made from high refractive index glass lens to minimize whole size dramatically without sacrificing performance.
• Both lens elements have anti-reflection coating on all surfaces to elicit combined master lens performance with less ghost/flare.
• M55 screw mount version will be released later.

UCL-G165 SD specifications (*10)

• Size: φ77mm (3.0in) x 25.2mm(1.0in)
• Weight: U/W: approx.121g (4.3oz) Air: 200g (7.1oz)
• Mount system: INON SD Mount
• Depth rating: 60m (196.9ft)
• Material/surface finishing: Corrosion-resistant aluminum alloy/rigid black alumite, PC etc.
• Lens material/coating: Optical glass/both side coating
• Depth of field (*17): 7cm/2.8in～∞ (GoPro® HERO3 Black Edition)
  5cm/2.0in～35cm/1.1ft (GoPro®HERO3+ Black Edition)
• Lens construction: 2 groups 2 elements
• Focal length (*18): 165mm(underwater)

(*15) Measured from “the forefront of the lens” as rated DoF data of GoPro® HERO series is not available preventing to calculate theoretical DoF of this lens.
(*16) Measured angle of view by INON or calculated angle of view underwater based on the measured angle of view on land. Not confirmed by camera manufacture. The measured angle of view of “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 110°. (The “White Edition” has not been tested)
(*17) Measured distance underwater for GoPro® HERO3/3+ Black Edition . Divide by 1.33 for visual distance underwater. Other Edition has not been tested.
(*18) Standalone focal length of UCL-G165 SD and not combined focal length with camera’s master lens.