I will be taking a trip that involves a lot of hiking and I really wanted to reduce the weight of my primary camera and lens without sacrificing quality. I currently use a D810 with Sigma 24-105 which I consider a big and heavy combo especially with my other equipment. I thought this would be a great opportunity to look at some of the FF mirrorless bodies with a more compact and light weight lens in the 24-70 to the 24-105 range. To my dismay, no such thing exists. I don't really care if the lens is interchangeable or not. What am I missing?