GoPro Hero 4 silver vs GoPro Hero 3+ black

GoPro Hero 3+ Black and GoPro Hero 4 Silver have quite similar specification for the recording. Is the outcome similar? We mounter both of the cameras to a remote controlled Lego car and drove around in our living room. That was very difficult because of the weight of the cameras. The steering worked whenever it wanted to and most of the time it just didn't. We shot 720p SuperView 100 fps. The resulting files were about equal in size. The editing was done with final cut pro, and it might be that it caused some problems to the side-by-side slow motion that you can see in the video. Driving was mainly perfomed at low and varying light conditions. No image processing was done for the videos.