INON UFL-G140 SD Underwater Semi-fisheye Conversion Lens for GoPro

[Description]

■「UFL-G140 SD」 Underwater Semi-fisheye Conversion Lens■

• Measured maximum angle of view of GoPro® HERO3/HERO3+ Black Edition is「approx. 151°(*11) on land」which will narrow down to「approx. 94°(*11)」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 as like using the camera on land.
• Theoretically the depth of field (DoF) of the GoPro® HERO3/HERO3+ Black Edition on land is「approx. 60cm/2ft~∞」based on focal length/aperture of camera lens and pixel pitch of the image sensor. With the INON UFL-G140 SD, DoF underwater will be extended to「10cm/3.9in.~∞(*12)」/ GoPro® HERO3 or「4cm/1.6in~∞(*12)」/GoPro® HERO3+ enabling you to shoot at close range to benefit deformed result. (Other Edition has not been tested)
• No vignetting even at FOV setting WIDE (Not compatible with GoPro® HERO3+ Black Edition “SuperView ゙ mode)
• Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater.
• Optics 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.
• The inner surface of the front acrylic dome has 5 layers multi-coating to deliver quality footage as like a glass dome at budget price.
• M55 screw mount version will be released later.

[Specifications]

• Size (including lens hood): φ93.4mm (3.7in) x 41.8mm(1.6in)
• Weight(including lens hood): U/W: approx.153g (5.4oz) Air: 300g (10.6oz)
• 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
  • Optical plastic/both side hard coating, inner multi-coating
• Depth of field(*13):
  
  • 10cm/3.9in~∞(GoPro® HERO3 Black Edition)
  • 4cm/1.6in~∞(GoPro® HERO3+ Black Edition)
• Lens construction: 4 groups 4 elements
• Max. view angle(*14): 140.0°(underwater)

[Sample]

• Inon GoPro accessory testing at Tiger Beach (part 1)