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I need to know the outer dimensions of the GoPro 3+ lens on the waterproof housing (The square black ring).

Does anyone know where I can find them or does anyone have the camera themselves that they can measure?

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I don't have the Hero 3+ but you can measure it with the help of a front picture of the cam and the dimensions of the camera. Taking the dimensions from here: http://www.dpreview.com/articles/8137555963/hands-on-with-The-gopro-hero-3-black-edition (5.8 x 3.9 x 2 cm) And using this picture: enter image description here

And measure how big the lens casing is compared to the size of the camera in pixels (for example with the Photoshop ruler tool) We get 35.4 mm. So I'd go with a solid 35mm.

I measured 537 for the camera and 327,5 for the black lens casing. So the Black Lens casing is 61% the size of the camera. 61% of 58mm is 35.38mm.

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