All probably achieved by better quality glass and firmware tweaks. Reduced image distortion is also mentioned. From what GoPro have stated, I’d expect a small increase in image sharpness, dynamic range and increased read/reset time from the sensor to reduce CMOS wobble (reference to the ‘reduced imaging artefacts by x2’). Looking at the technical info, the specifications of the lens remain the same both the hero 3 and hero 3+ have a fixed 6-element aspherical lens with f/2.8 aperture. Pretty ambiguous terms but this is targeted at the pro-consumer therfore terms like this are expected. The Hero 3+ has a new lens, which is broadly classified as increasing image quality and sharpness by 33%, and reducing imaging artefacts by x2. It must account for the weight loss also, as the comparison of the Hero 3 and Hero 3+ camera bodies shows there’s only 2 grams difference (75g v 73g).

This is where the “20% smaller” comes in, which is good news as it means that the Hero 3+ is still compatible with the larger Hero 3 casing. The Hero 3+ ships with a new, snugger waterproof housing it features improved buttons and is submersible up to 40M (previous Hero 3 casing offered up to 60M). GoPro lists the Hero 3+ as being 20% smaller and lighter, but this isn’t a direct reference to the physical size of the actual camera body. That’s it in a nutshell, let’s have a look at the features in more detail: It’s available in both Black and Silver edition and retailing for the same price as previous respective GoPro Hero 3 models. Boasting a new lens, sleeker design, increased battery life and better audio (amongst other features). The much-rumored GoPro Hero 3+ has been released.

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Gopro hero 3 silver edition update