Today, on the route between Hattingen and Dahlhausen, I made test images with both a waterproof cell phone protective cover and some without. The difference is clearly visible, v.a. Color intensity and sharpness are reduced by the shell. Anyway, this is such a thing to do with the pictures when strong wind turns the board with the nose in the wind direction immediately and drifts with the wind, even against the current, as soon as you once put out paddling. Adieu, you nice motive :-) In addition, the almost black screen in strong sunlight, so that many pictures, also because I do not see when the camera has focused, remain until the end of the tour surprises.