I'm not sure how much manual adjustment the GoPro 3 Black offers, but the Protune option may capture enough detail to wring out in post processing. If the GoPro is like most consumer grade digicams it will apply too much noise reduction at high ISOs, which looks pleasantly smooth but smears fine detail. The Protune option may be an alternative, although it'll require more work to recover shadow and highlight detail, and find a balance between noise reduction and detail.