Compatible with GoPro HD HERO2 outdoors, motorsports and surf edition cameras, and HD HERO Helmet, Motorsports, Surf, Naked, and 960 cameras. The Makrolon flat lens (US Patent number D650,821S) fixes the underwater focus/blurry problem caused by the original Gopro curved lens. With the flat lens the GoPro camera can take crisp high definition undewater video. The flat lens is a drop-in replacement for the original GoPro housing curved lens. It has a depth rating of up to 180ft, the same as the Gopro housing. The lens is made of Makrolon, an amorphous thermoplastic material noted for its outstanding impact strength, superior dimensional stability, glass-like transparency, excellent thermal resistance, and low-temperature toughness.

Spearfishing video shot in high definition with the GoPro HD HERO and a flat lens.

Video demonstrating effect of the flat underwater lens at the 5 different available settings available in the GoPro HD HERO camera; R1, R2, R3, R4, and R5. R5 is the most suitable high definition setting for filming underwater and has no vignette effect. The equivalent setting to R5 in the HERO2 camera is 1080p @ 127 FOV 30 FPS.

* The polycarbonate flat lens comes with a separate spacer. The spacer is a simple rubber gasket that fits over the GoPro camera lens stem, and prevents the newer HERO2 camera from being pushed against the housing lens. See the spacer usage guide below to determine if the spacer should be used with your camera:

• Gopro HD HERO2 and Makrolon flat lens - Spacer is recommended.

• Gopro HD HERO and Makrolon flat lens - Spacer not required.

• Gopro HD HERO 960 and Makrolon flat lens - Spacer not required.

GoPro camera with spacer in place.

Installation

To install the flat lens undo the screws of the black plastic bezel with a precision Phillips screwdriver (also available from our store), remove the bezel and set it aside leaving the screws in it. Take out the curved lens, there's a black gasket that goes between the lens and housing that is usually stuck to the lens and will come out with it. Separate the gasket from the lens and place it back in the housing. Put the flat lens on top of the gasket, no sealant or glue is needed. There's only one way in which the lens can be positioned for the bezel to seat back and the screws align with the screw holes, so there's no worry of assembling incorrectly. When tightening the bezel screws do it in a crisscross pattern to tighten it down evenly. Do not over tighten the bezel screws. Over tightening may compress the rubber gasket too much, making it expand into the field of view of the camera.

Housing and lens disassembled, with the Makrolon flat lens on top of the housing.

We often get asked if it's difficult to install the flat lens in the Gopro housing. What better way to demonstrate how easy it is than by doing it outdoors on a breezy day, on a small uneven work surface, and installing two lenses at once. Adding the risk factor of dropping something in the water for extra tension Total install time less than 5 minutes. Video was shot with a Gopro in R5 setting, mounted on a head strap.

** It's a must to test any housing at depth before using it with a camera. This holds true for the Gopro housing whether with the original lens or the flat lens. Speardiver International will not assume responsibility for water damage to cameras under any circumstances.