With nearly every smartphone test, I take a photo or two of my local church. This serves another purpose as it allows for comparisons with previous tested/reviewed phones on picture quality using the church as the reference. Obviously, weather conditions can play a part, but it still provides a reasonable guide.
So below, in spooky fog, the Church of St Michaels and All Angels, Princetown, taken by the new Nexus 6P. I thought the quality was excellent in this shot, despite the fog and rain!