The GoPro Hero 6 was inside its frame and attached to the tripod adapter. I mounted it to my large DSLR tripod. I went inside the warm house and remoted controlled my shots with the GoPro app on my iPhone. I played around with exposure time und WhiteBalance until a got a nice set of photos.
After that I took my Canon EOS 7D DSLR and did exact the same shots from the tripod. This time I had to stay outside right beside the Canon to take the photos with my cabled remote trigger.
Next I developed/croped all of the footage in Photoshop in the same way to have a comparison. Result: It's almost impossible to see any difference between the GoPro and a DSLR. GoPros's electronic enhancements do a really great job and compensate most of the lacks due to the small sensor size, iso-noise etc. I really love it!